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April 18, 2014

Search: A 66.0 kg person throws a 0.0420 kg snowball forward with a ground speed of 28.0 m/s. A second person, with a mass of 55.0 kg, catches the snowball

Number of results: 61,078

physics
A 66.0-kg person throws a 0.0450-kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 57.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.40 m/s, and the second person is ...
Sunday, October 16, 2011 at 12:55am by Anonymous

physics
A 68.0 kg person throws a 0.0450 kg snowball forward with a ground speed of 27.0 m/s. A second person, with a mass of 58.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.50 m/s, and the second person is ...
Monday, March 28, 2011 at 11:17pm by Alexandria

physics
A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.00 m/s, and the second person is ...
Thursday, June 2, 2011 at 2:36pm by sam

physics
A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.00 m/s, and the second person is ...
Thursday, June 2, 2011 at 9:13pm by sam

Physics
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at rest. After the ...
Wednesday, October 17, 2012 at 12:54pm by Megan

Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at rest. After the ...
Monday, October 15, 2012 at 5:34pm by Anonymous

Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at rest. After the ...
Monday, October 15, 2012 at 6:59pm by Anonymous

Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at rest. After the ...
Monday, October 15, 2012 at 11:46pm by Anonymous

Physics
Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The ...
Friday, June 3, 2011 at 12:03am by Kristen

Physics
Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The ...
Friday, June 3, 2011 at 12:03am by Kristen

physics
65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches the snowball. both people are on skates. the first person is intially moving forward wit ha speed of 2.50 m/s and the second person is initially at ...
Tuesday, November 2, 2010 at 10:16pm by bailey

physics
Ann, a 59.2 kg person throws a 0.0435 kg snowball forward with a ground speed of 39.5 m/s. Billy, with a mass of 63.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.22 m/s, and Billy is initially at rest. After the ...
Sunday, October 21, 2012 at 9:19pm by Anonymous

physics
A(n) 86.6 kg person throws a(n) 0.06 kg snow- ball forward with a ground speed of 42.3 m/s. A second person, of mass 41.5 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.06 m/s, and the second person is ...
Monday, June 24, 2013 at 3:06pm by redwolf

physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 94.0 kg. The mass of the rock is 0.350 kg. Initially the wagon is rolling forward at a speed of 0.520 m/s. ...
Saturday, October 22, 2011 at 1:57pm by Sam

physics )':
A 66.5 kg ice skater moving to the right with a velocity of 2.80 m/s throws a 0.16 kg snowball to the right with a velocity of 20.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, December 15, 2011 at 8:16pm by Allison

physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 95 kg. The mass of the rock is 0.34 kg. Initially the wagon is rolling forward at a speed of 0.50 m/s. Then ...
Friday, November 4, 2011 at 12:43pm by Meagan

Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 94 kg. The mass of the rock is 0.27 kg. Initially the wagon is rolling forward at a speed of 0.49 m/s. Then ...
Tuesday, October 8, 2013 at 8:43pm by Dreama

physics
A 66.5 kg ice skater moving to the right with a velocity of 2.09 m/s throws a 0.14 kg snowball to the right with a velocity of 22.5 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Sunday, November 3, 2013 at 11:17pm by Katie

Physics 141
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 93.0 kg. The mass of the rock is 0.320 kg. Initially the wagon is rolling forward at a speed of 0.520 m/s. ...
Tuesday, March 11, 2014 at 9:51pm by dakota22

Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 97.0 kg. The mass of the rock is 0.320 kg. Initially the wagon is rolling forward at a speed of 0.540 m/s. ...
Sunday, October 14, 2012 at 4:27pm by Sara

College Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...
Thursday, October 14, 2010 at 1:28pm by Jordan

physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...
Friday, October 15, 2010 at 6:58pm by Sarah

Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 92.5 kg. The mass of the rock is 0.310 kg. Initially the wagon is rolling forward at a speed of 0.550 m/s. ...
Monday, October 22, 2012 at 8:40pm by Elizabeth

Physics
A 74.0 kg ice skater moving to the right with a velocity of 2.90 m/s throws a 0.15 kg snowball to the right with a velocity of 23.2 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, February 17, 2011 at 6:59pm by Mel

physics
A 74.0 kg ice skater moving to the right with a velocity of 2.58 m/s throws a 0.18 kg snowball to the right with a velocity of 24.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, November 8, 2012 at 10:12pm by Brandon

physics
A 74.0 kg ice skater moving to the right with a velocity of 2.58 m/s throws a 0.18 kg snowball to the right with a velocity of 24.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, November 8, 2012 at 10:55pm by Brandon

physics
A 68.0 kg ice skater moving to the right with a velocity of 2.55 m/s throws a 0.16 kg snowball to the right with a velocity of 27.5 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Monday, December 16, 2013 at 10:02pm by Anonymous

Physics
A 68.0 kg ice skater moving to the right with a velocity of 2.55 m/s throws a 0.16 kg snowball to the right with a velocity of 27.5 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Monday, December 16, 2013 at 10:39pm by Anonymous

Physics
A 74.0 kg ice skater moving to the right with a velocity of 2.90 m/s throws a 0.15 kg snowball to the right with a velocity of 23.2 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Wednesday, February 16, 2011 at 9:35pm by Mel

HO Physics
A 68.0 kg ice skater moving to the right with a velocity of 2.55 m/s throws a 0.16 kg snowball to the right with a velocity of 27.5 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Monday, December 16, 2013 at 10:18pm by Anonymous

PHYSICS HELP!
A 73.5 kg ice skater moving to the right with a velocity of 2.64 m/s throws a 0.18 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, December 12, 2013 at 10:38pm by Najah

Physics
A 74.5 kg ice skater moving to the right with a velocity of 2.62 m/s throws a 0.21 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Sunday, April 24, 2011 at 12:29am by Elizabeth

Physics
A 65.0 kg ice skater moving to the right with a velocity of 2.47 m/s throws a 0.18 kg snowball to the right with a velocity of 24.3 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Thursday, November 8, 2012 at 4:16pm by Dakota

Physics
A 65.0 kg ice skater moving to the right with a velocity of 2.47 m/s throws a 0.18 kg snowball to the right with a velocity of 24.3 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
Friday, November 9, 2012 at 3:53pm by Dakota

physics
A 67.3 kg ice skater moving to the right with a velocity of 2.52 m/s throws a 0.151 kg snowball to the right with a velocity of 33.7 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and ...
Sunday, December 2, 2012 at 10:04pm by Emily

physics
A 66.5 kg ice skater moving to the right with a velocity of 2.72 m/s throws a 0.104 kg snow- ball to the right with a velocity of 40.3 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and ...
Wednesday, December 5, 2012 at 6:02pm by Jill

Physics
This is a conservation of momentum problem. You have to do it in two steps, since there are two unknowns. V1i = first person's initial velocity = 2.00 m/s V1f = first person's final velocity = ? m = snowball mass = 0.041 kg M1 = first person's mass = 69 kg M2 = second person'...
Friday, June 3, 2011 at 12:03am by drwls

Physics
a 65-kg ice skater moving to the right with a velocity of 2.50m/s throws a .150kg snowball to the right with a velocity of 32.0m/s relative to the ground a) what is the velocity of the ice skater after throwing the snowball? b) a second skater initially at rest with a mass of ...
Thursday, April 26, 2012 at 10:55pm by Sarah

Physics
A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0 above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as it reaches the ground below the cliff. m/s (b) ...
Saturday, July 24, 2010 at 8:34pm by Matt

Physics/Math
A 1.50 kg snowball is fired from a cliff 12.5 m high with an initial velocity of 14.0 m/s, directed 41.0 above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as it reaches the ground below the cliff. (b) What ...
Wednesday, March 7, 2007 at 1:08am by Technoboi11

Physics.
A stationary 100-kg person is initially holding a 50-kg ball while standing on a skateboard. The person throws the ball to the right, and the ball moves (with respect to the ground) with a speed of 12 m/s. The person on the skateboard ____________. A. moves to the left with a ...
Thursday, February 27, 2014 at 2:56pm by Jammie K.

physics
Running at 2.0 m/s a 45.0 kg person collides with a 90.0 kg person who is traveling at 7.0 m/s in the other direction. Upon collision, the 90 kg person continues to travel forward at 1.0 m/s. How fast is the 45 kg person knocked backwards?
Tuesday, November 29, 2011 at 10:00pm by Jane

physics
Tony (of mass 75 kg) coasts on his bicycle (of mass 15 kg) at a constant speed of 4 m/s,carrying a 14 kg pack. Tony throws his pack forward, in the direction of his motion, at 6 m/s relative to the speed of bicycle just before the throw.What is the initial momentum of the ...
Friday, February 22, 2013 at 5:59am by Anonymous

physics
An 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless pulley to a 66 kg sandbag. With what speed does the man hit the ground if he started from rest?
Wednesday, January 26, 2011 at 4:12pm by jr

physics
During a snowball ght, your opponent distracts you by throwing a snowball at you with a high arc. She throws snowballs with a speed of 26.5 m/s and the first is thrown at 70.0 degrees. As you are watching the first snowball, she throws a second at a lower angle. (a) If both ...
Saturday, August 6, 2011 at 7:06am by waqas

physics
Snowballs are thrown with a speed of 12.5 m/s from a roof 7.8 m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 16 above the horizontal. (a) Is the landing speed of snowball A greater than, less than, or the same as the landing ...
Friday, October 12, 2012 at 1:39pm by HELP

Physics
A 90 kg person stands on the ground before jumping vertically upward. If momentum is truly conserved in all closed isolated systems, then the Earth-person system should conserve momentum. If the person jumps with a speed of 3.5 m/s, what is resulting speed of the Earth in the ...
Sunday, December 4, 2011 at 6:35pm by JuJu

Physics
A 70 kg person is riding on a frictionless skateboard at 5 m/s. A friend facing him throws a 5 kg ball toward him at 20 m/s. What is his final speed after catching the ball?
Tuesday, January 28, 2014 at 11:32am by Anonymous

Physics
A trapeze artist weighs 8.00 x 10^2 N. The artist momentarily held to one side of a swing by a partner so that both of the swing ropes are at an angle of 30 with the vertical. In such a condition of static equilibrium, what is the horizontal force being applied by the partner...
Wednesday, April 13, 2011 at 9:40pm by Becky

Physics
A boy on a 2.4 kg skateboard initially at rest tosses a(n) 8.2 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boys mass. Answer in units ...
Wednesday, January 16, 2013 at 6:46pm by Cesar

physics
a 20.0 kg child on an 80 kg boat throws a 5 kg package horizontally with a speed of 10 m/s. Calculate the resulting density of the boat, assuming it was initially set at rest.
Monday, January 31, 2011 at 3:07pm by willy n

physics
A 1.5 kg snowball is fired from a cliff 12.5m high with an inital velocity of 14 m/s directed 41 degrees above the horizontal. a) how much work is done on the snowball by the gravitaitonal force during its flight to the flat ground below the cliff? b) what is the change in the...
Thursday, January 4, 2007 at 6:57pm by Jamie

Physics
As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars on the carousel very close to its outer edge and climbs aboard. Thus, this person begins with an ...
Saturday, November 3, 2012 at 1:42pm by Sam

physics
To get off a frozen frictionless lake, a 70.0 kg person takes off a 0.150 kg shoe and throws it horizontally directly away from the shore with a speed of 2.00 m/s. If the perrson is 5.00 m from the shore, how long does it take for her to reach it?
Friday, February 12, 2010 at 3:26pm by Anonymous

Physical Science
what forward force must the ground apply to the foot of a 60.0 kg person to result in an acceleration of 1.00m/s^2
Friday, October 14, 2011 at 5:04pm by Patricia

Physical Science
See if any of the following links will help at all: http://search.yahoo.com/search?fr=mcafee&p=forward+force+must+the+ground+apply+to+the+foot+of+a+60.0+kg+person+to+result+in+an+acceleration+of+1.00m%2Fs%5E2+ Sra
Friday, October 14, 2011 at 5:04pm by SraJMcGin

Physics
A child throws a snowball with a horizontal velocity of 18m/s directly toward a tree, from a distance of 9m and a height above the ground of 1.5 m. After what interval does the ball hit the tree? At what height above the ground will the snowball hit the tree? Determine the ...
Sunday, February 22, 2009 at 8:55pm by Li

its physics.. i just want the formula
A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boys mass. Answer in units of kg (...
Thursday, January 17, 2013 at 11:16pm by Rah_rAh

Physics
Two people are standing on a 2.2-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. One person throws a 6.1-kg ball to the other, who catches it. The ball travels nearly horizontally. Excluding the ball, the ...
Friday, October 24, 2008 at 7:25am by Z

Algebra
Ground beef sells for $4.75 per kg and ground pork sells for $5.50 per kg. How many kg of ground pork should be mixed with 8 kg of ground beef to make a mixture that sells for $5.10 per kg? I dont know how to set this up or anything. Please help!
Wednesday, December 12, 2012 at 8:41pm by Cassandra

Physics
A spaceship of mass 2.310^6 kg is cruising at a speed of 6.010^6 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.210^5 kg, is blown straight backward with a speed of 2.010^6 m/s. A second piece, with mass 8.410^5 ...
Monday, November 26, 2012 at 2:38pm by K

physics
A 39-kg girl standing at rest on slippery (frictionless) ice throws a 10-g ball forward with a speed of 10 m/s. Just afterward, the girl will
Friday, February 3, 2012 at 12:52pm by Emily

Physics - Momentum
A child in a boat throws a 5.60 kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 22.0 kg and that of the boat is 55.0 kg.
Wednesday, December 9, 2009 at 6:15pm by DJ

physics
Sprinting near the end of a race, a runner with a mass of 70 kg accelerates from a speed of 6 m/s to a speed of 9 m/s in 2 s. (a) What is the runner's average acceleration during this time? (b) To gain speed the runner produces a backward force on the ground, so that the ...
Monday, November 22, 2010 at 6:55pm by confused

Physics
A boy is standing on a skateboard holding two 5.0 kg bowling balls. Initially they are moving to the left at a speed of 3.0 m/s. At one point the boy throws one ball to the right at 4.0 m/s causing his speed to increase. Before he can slow down, he throws the second ball to ...
Thursday, November 29, 2012 at 7:48pm by Jordan

Physics 1
(II) How close to the edge of the 20.0-kg table shown in Fig. 947 can a 66.0-kg person sit without tipping it over?
Monday, August 15, 2011 at 7:01am by Jerome

physics
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this first snowball, you throw a second snowball at a low angle and time it to arrive at the same time as the first. The acceleration of gravity is 9.8 m/...
Thursday, February 3, 2011 at 5:01pm by emily

physics
A person of mass 84.5 kg is initially at rest on the edge of a large stationary platform of mass 150 kg, supported by frictionless wheels on a horizontal surface. The person jumps off the platform, traveling a horizontal distance of 1.00 m while falling a vertical distance of ...
Friday, February 24, 2012 at 1:23am by John

Science
A child in a boat throws a 5.30 kg package out horizontally with a speed of 10 m/s, see the figure. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.0 kg and that of the boat is 55.0 kg What is the magnitude?
Thursday, October 20, 2011 at 10:58pm by kago

physics
To get off a frozen frictionless lake, a 70.0kg person takes off a 0.150-kg shoe and throws it horizontally directly away from the shore with a speed of 2.00m/s. If the person is 5.0 m from the shore, how long does it take for him to reach it?
Monday, February 4, 2008 at 1:12pm by melissa

AP Physics
Hi, I have the follwoing physics question to ask, Plesae help with hints. "Two people are standing on a 2.5-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. One person throws a 5.9-kg ball to the other, who ...
Wednesday, November 4, 2009 at 11:28am by Indi

URGENT Physics PLEASE help
5. A 1,600 kg car is moving south at 24 m/s. What is its momentum? (Points : 1) 66 kgm/s south 66 kgm/s north 38,000 kgm/s north 38,000 kgm/s south Question 6. 6. The velocity of a 150 kg cart changes from 6.0 m/s to 14.0 m/s. What is the magnitude of the impulse that acted on...
Monday, January 27, 2014 at 2:31pm by Anon

Physical Science
A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?
Sunday, September 11, 2011 at 4:28pm by Help

Science
An 80 kg person decides to jump off the back end of a 30 kg canoe. His friend measures the speed of the canoe after he jumps to be 0.8 m/s. The canoe was initially at rest. What rule would I use to find the speed of the person who jumped?
Thursday, January 19, 2012 at 3:34pm by Micheal

physics
A child in a boat throws a 6.00 kg package out horizontally with a speed of 12.0 m/s, Fig. 7-28. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 50.0 kg. Magnitude ___m/sDirection
Sunday, March 13, 2011 at 11:52am by joe

Physical Science
A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?
Sunday, September 11, 2011 at 6:39pm by Jason

Physics
sorry i know i keep asking but my teacher wont be here today and tomorrow..and i dont understand these four problems... 1) a 65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches the snowball. both ...
Friday, December 8, 2006 at 12:18am by becky

AP Physics - Linear Momentum
During a Chicago storm, winds can whip horizontally at speeds of 100 km/h. If the air strikes a person at the rate of 40 kg/s per square meter and is brought to rest, estimate the force of the wind on a person. Assume the person is 1.50m high and 0.50m wide. Compare to the ...
Friday, October 16, 2009 at 1:23am by Henry

Physics
A child in a boat throws a 5.40 kg package out horizontally with a speed of 10.0 m/s, Fig. 7-31. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 40.0 kg.
Thursday, April 14, 2011 at 11:50pm by Brittney

physics
A 2200-kg sport utility vehicle traveling at 96 km/h can be stopped in 0.21 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and the velocity changes in 0....
Monday, December 6, 2010 at 10:03pm by lets go

physics
The following objects are released from rest and allowed to roll down an inclined plane. Rank the objects by the order of which they will arrive at the bottom of the incline. (1 = the first to arrive, 2 = the second, etc.) I = 2611 kg*m^2, M = 50 kg, R = 0.8 m I = 2883 kg*m^2...
Friday, March 16, 2012 at 10:31pm by Katie

pulley and rotation
Two masses, mA = 35.0 kg and mB = 42.0 kg, are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius 0.50 m and mass 4.8 kg. Initially mA is on the ground and mB rests 2.5 m above the ground. If the system is released, use ...
Thursday, March 11, 2010 at 8:11pm by Anonymous

physics
A 83-kg worker clings to a lightweight rope going over a lightweight, low-friction pulley. The other end of the rope is connected to a 66-kg barrel of bricks. If the worker is initially at rest 16 m above the ground, how fast will he or she be moving when he or she hits the ...
Sunday, November 20, 2011 at 5:08pm by matt

physics
A 0.720 kg snowball is fired from a cliff 8.10 m high. The snowball's initial velocity is 14.2 m/s, directed 30.0 above the horizontal. (a) How much work is done on the snowball by the gravitational force during its flight to the flat ground below the cliff? (b) What is the ...
Saturday, October 16, 2010 at 9:17pm by VitaX

physics
A 80- kg ice hockey player standing on a frictionless sheet of ice throws a 6.2- kg bowling ball horizontally with a speed of 2.1 m/s. With what speed does the hockey player recoil?
Saturday, October 31, 2009 at 11:49pm by kevin

physics
A 72- kg ice hockey player standing on a frictionless sheet of ice throws a 5.6- kg bowling ball horizontally with a speed of 3.9 m/s. With what speed does the hockey player recoil?
Monday, February 24, 2014 at 2:14pm by Anonymous

physics
A 45.00 kg child standing on a frozen pond throws a 0.60 kg stone to the east with a speed of 5.80 m/s. Neglecting friction between child and ice, what is the speed (in m/s) of the child after throwing the stone? I'm kind of confused about the masses..
Monday, November 29, 2010 at 6:34pm by help

Physical Science
A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward? *I dont understand how to work them*
Sunday, September 11, 2011 at 10:07pm by Jason (please help)

physics
Buffy is rolling along in her 12.7 kg wagon at 3.6 m/s (in the positive direction) when she jumps off the back. She continues to move forward at 1.2 m/s relative to the ground. This causes her wagon to go speeding forward at 9.51 m/s relative to the ground. How much does Buffy...
Sunday, February 9, 2014 at 8:12pm by dean

physics
starting at rest on frictionless ice, a 50 kg person applies a constant 150 Newton force on a 75 kg person. The duration of the push is .15 seconds. At what speed does each of them end up moving?
Saturday, November 12, 2011 at 4:29pm by Anonymous

physics
Buffy is rolling along in her 11.1 kg wagon at 4.6 m/s (in the positive direction) when she jumps off the back. She continues to move forward at 1.5 m/s relative to the ground. This causes her wagon to go speeding forward at 13.03 m/s relative to the ground. How much does ...
Sunday, February 9, 2014 at 8:07pm by jim

physics
1) a bullet of mass 0.02 kg is fired into a block of wood of mass 1.5 kg resting on a horizontal table. The block moves offwith an initial speed of 8 m/s. Estimate the speed with the bullet strikes the block. 2) The bullet in question 1 is fired from a rifle of mass 2.5 kg. ...
Saturday, March 15, 2014 at 3:40am by waslat

physics
Suppose all the people of the Earth go to the North Pole and, on a signal, all jump straight up. Estimate the recoil speed of the Earth. The mass of the Earth is 6 1024 kg, and there are about 6 billion people (6 109). Take the average mass of a person to be 74 kg and the ...
Friday, February 10, 2012 at 8:40pm by marcos

Physics
1- A 5.0 kg block moving east with speed of 6 m/s collides head on with another 8.0 kg block moving west with speed of 4 m/s. After the collision the 5.0 kg block was moving west with speed of 5 m/s while the 8.0 kg block was moving east. a) What is the speed of the 8.0 kg ...
Sunday, June 2, 2013 at 3:48am by Maryam

College Physics
A person riding a bicycle on level ground at a speed of 10.6 m/s throws a baseball forward at a speed of 19.1 m/s relative to the bicycle at an angle of 41 relative to the horizontal (x) direction. (a) If the ball is released from a height of 1.3 m, how far does the ball ...
Monday, September 12, 2011 at 9:50pm by Anon

Physics
In starting an exercise, a 1.60-m tall person lifts a 2.10 kg book from the the ground so it is 2.20m above the ground. What is the potential energy of the book relative to (a) the ground,and(b) the top of the persons head? (c) What is the work done by the person in part(a)?
Wednesday, December 7, 2011 at 10:02pm by Amanda and Leah

physics
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this first snowball, you throw a second snowball at a low angle and time it to arrive at the same time as the first. Assume both ...
Sunday, December 16, 2012 at 10:30pm by Emily

science
well, since F = ma it is kgm/s^2 so, kgm/s^2 = Gkgkg/m^2 G = kgm/s^2 * m^2/kgkg = m^3/kgs^2 #5 Which you could also have easily looked up online...
Saturday, August 31, 2013 at 8:21pm by Steve

math
first you have to convert 176pounds to kg, then we know that 50mg/kg/day so this person weights 78.2 kg. (176/2.25) so that means every capsules contain 250mg to cover 4kg of this person. so this person has to take at least 20pills/day. :)
Saturday, March 1, 2008 at 7:52pm by No name

Physics
At a city park, a person throws some bread into a duck pond. Two 4.00-kg ducks and a 9.00-kg goose paddle rapidly toward the bread, as shown in our sketch (Intro 1 figure) . If the ducks swim at 1.10 m/s, and the goose swims with a speed of 1.30 m/s, the total momentum of the ...
Sunday, March 25, 2012 at 10:54pm by William

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