Sunday
April 20, 2014

Search: A 56 kg rock climber is climbing a "chimney

Number of results: 26,484

Physics
A rock climber of mass 55 kg is hanging suspended from a rope tied to another climber of mass 65 kg on a horizontal cliff ledge. If the coefficient of kinetic friction between the climber on the ledge and the ledge is 0.45, what is the net acceleration of the climber on the ...
Sunday, July 15, 2012 at 3:15pm by bob

Physics
A 56 kg rock climber is climbing a "chimney" between two rock slabs as shown in the figure. The static coefficient of friction between her shoes and the rock is 1.02; between her back and the rock it is 0.70. She has reduced her push against the rock until her back and her ...
Wednesday, February 10, 2010 at 8:30pm by Web

physics
A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
Monday, October 24, 2011 at 2:22am by Anonymous

physics
A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
Monday, October 24, 2011 at 10:57am by Anonymous

physics
Stemming a chimney. A rock climber of mass 71 kg wants to make her way up the crack between two rocks as shown in the figure below. The coefficient of friction between her shoes and the rock surface is ́S = 0.90. What is smallest normal force that she can apply to both ...
Thursday, October 6, 2011 at 5:06pm by Mel

physics
A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber is at the top. Find ...
Wednesday, May 11, 2011 at 2:43pm by Merlin

college physics
A 90 kg rock climber is stationary off the side of an overhanging cliff hanging onto her climbing rope. Another rope is tied to her foot and is attached at the other end to her 30 kg rock-climbing dog, also hanging out 2 m below her. Tied to the dog’s foot is yet another rope ...
Saturday, November 3, 2012 at 4:17pm by kevin

physics
With the forces in equilibrium if a stationary climber is using a rope which is 60 degrees to the vertical, the rock face is at 30 degrees to the vertical, and the weight of the climber in cluding equipment is 850N. What is the tension on the rope? What is the force exerted on...
Monday, April 18, 2011 at 4:27pm by Declan

Physics
A 80 kg climber is standing horizontally on a perfectly vertical cliff face. The climber is 1.8 m tall and is attached by a 2 m long rope fastened around their middle to a point on the cliff above them. What is the normal force the cliff face exerts on the climber in Newtons? ...
Monday, March 18, 2013 at 3:13am by Stranger

physics
consider the 52 kg climber. find the tension in the rope and the force that the climber must exert with her feet on the vertical rock face to remain stationary. assume that the force is exerted parallel to her legs. also, assume negligible force exerted by her arms. what is ...
Wednesday, June 5, 2013 at 6:28pm by kim

chem
if a rock climber accidentally drops a 56 gram piton from a height of 375 meters, what would its speed be before striking the ground ignore the air resistance
Thursday, August 22, 2013 at 11:55pm by billy

Physics
A small first aid kit is dropped by a rock climber who is descending steadily at 1.5 m/s. A.)After 3.1s, how far is the kit below the climber?
Monday, February 14, 2011 at 6:08pm by Shannon

Chem
If a rock climber accidentally drops a 56-gram piton from a height of 375 meters, what would its speed be before striking the ground? Ignore the effects of air resistance.
Tuesday, September 11, 2012 at 8:17pm by Bobby

physics
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.3 kg and 3.56 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the rock.
Sunday, March 10, 2013 at 9:08pm by chel

physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 16 m/s at an angle of 55° above the horizontal. The kit is caught right at the peak of the its trajectory. What is the vertical height between the ...
Monday, October 14, 2013 at 4:22pm by Bonnie

physics
A small first aid kit is dropped by a rock climber who is descending at a constant velocity of - 1.3m/s. a) Sketch the velocity vs. time graph for both the climber and her first aid kit and paste your sketch in the space below. b) After 1.5 seconds, what is the velocity of ...
Saturday, October 23, 2010 at 8:55pm by grace

irsc
a 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. if the 10-kg rock falls with acceleration a, what is the acceleration of the 20-kg rock?
Wednesday, March 26, 2014 at 8:28pm by Anonymous

Physics
A small first aid kit is dropped by a rock climber who is descending steadily at 1.3 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber? This problem seems like it should be easy, but I'm not sure which equation to use. I'd ...
Sunday, September 30, 2007 at 2:25pm by Stephanie

physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 17 m/s at an angle of 50° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
Sunday, September 5, 2010 at 6:26pm by demi

physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 21 m/s at an angle of 58° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
Monday, September 20, 2010 at 9:41pm by Emily

physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 23 m/s at an angle of 69° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
Monday, October 11, 2010 at 5:34pm by Sarah

Physics
The force of gravity on a 2.0 kg rock is twice as great as on a 1 kg rock. Why doesnt the heavier rock fall faster?
Wednesday, July 13, 2011 at 1:25am by Capreeca

physics
A small first-aid kit is dropped by a rock climber who is descending steadily at 1.6 m/s. After 1.6 s, what is the velocity of the first-aid kit? The acceleration of gravity is 9.81 m/s2. 2)How far is the kit below the climber after the 1.6 s?
Friday, November 12, 2010 at 8:59pm by john

Equation help
A physics student stands at the top of a hill that has an elevation of 56 meters. he throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y=0.04x^2+1.3x+56 where x is the ...
Wednesday, April 2, 2014 at 10:31am by Alex

physics
a mountain climber jumps a 3.0 m wide crevasse by leaping horizontally with a speed of 8.0 m/s. (a) if the climber's direction of motion on landing is -45 degrees, what is the height the difference between the two sides of the crevasse? (b) where does the climber land?
Tuesday, December 13, 2011 at 4:57pm by taylor

trig
Is the 56.4º at the base of the rock or at the new position of the geologist? I took it to be at the new position of the geologist. The line from the base of the rock to the geologist's original position is common to two triangles. I let the height of the rock be h m then ...
Wednesday, April 16, 2008 at 10:56pm by Reiny

Physics
A small first-aid kit is dropped by a rock climber who is descending steadily at 1.9 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber? My question is, how can you determine how fast/far the kit is going???? If the kit is ...
Sunday, September 17, 2006 at 10:53pm by Help again?? Becca

phys
A rock stuck in the tread of a 56.0--diameter bicycle wheel has a tangential speed of 3.10 . When the brakes are applied, the rock's tangential deceleration is 1.30m/s2 What is the magnitudes of the rock's angular velocity at = 1.70 ?
Monday, May 28, 2012 at 11:17pm by keren

PHYSICS!!!
A climber with a mass of 75 kg is attached to a 6.5 m rope with a cross sectional area of 3.5×10−4 m2. When the climber hangs from the rope, it stretches 3.4×10−3 m. What is the Young's modulus of the rope? Please help me :)
Saturday, June 9, 2012 at 3:33pm by Kaelyn

maths
If the price is now p, then he can buy 56/p kg. So, at the new price, (p-1)(56/p + 1) = 56 p = 8 check: mohan can buy 7kg at Rs8/kg or, 8kg at Rs7/kg
Saturday, October 19, 2013 at 11:03am by Steve

physical science
A 100 kg ball of lead rests next to a 10 kg rock. Which statement below is true? a. the lead ball and the rock have equal amounts of inertia b. if the lead ball and the rock fell from the same height in a vacuum, the rock would hit the ground first because it is less massive. ...
Monday, October 25, 2010 at 2:43pm by Trang

physics
a 100 kg boulder is placed under the surface of water. its volume is 0.5 x 10^5 cm^3. what is the weight of the rock while under water; compare that to the weight of the rock in air (sitting on the ground) i just found the weight of the rock in air by multiplying 100 kg by 9.8...
Tuesday, March 16, 2010 at 7:40pm by john

Uni Physics
A 67 kg astronaut (Jeff), an 88 kg astronaut (Brett) and a 17 kg rock are tied together by a light rope during a space walk. The distance between Jeff and the rock is 5.0 m, the distance between Brett and the rock is 2.0 m. Find the position of the centre of mass of the system...
Tuesday, October 2, 2012 at 12:00am by David Gia

physics
. A rescue helicopter lifts a stretcher case off a hillside. The injured climber and stretcher have a mass of 180 kg and the rope supporting them has a breaking force of 2000 N. Calculate: (a) the tension in the rope when the stretcher and climber are suspended from the rope ...
Monday, November 21, 2011 at 12:21pm by as01

physics
A 100 kg ball of lead rests next to a 10 kg rock. Which statement below is true? a. the lead ball and the rock have equal amounts of inertia b. if the lead ball and the rock fell from the same height in a vacuum, the rock would hit the ground first because it is less massive c...
Saturday, January 8, 2011 at 11:52pm by mimii

physical science
A kg ball of lead rests next to a 10 kg rock. which statement below is true:a:the lead ball and rock have the same amount of inertia,b:if the lead ball and the rock fell from the same height in a vacuum, the rock would hit the ground first because it is less massive,c: on the ...
Saturday, January 29, 2011 at 2:13pm by ellen

Physics
Consider the motion of the rock in the figure below. What is the minimum speed the rock can have without the string becoming "slack"? (The rock is traveling in vertical circle. Assume that m = 1.6 kg and r = 0.48 m.)
Friday, June 22, 2012 at 5:22pm by Sierra

Physics
A 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. Find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earth’s velocity. Earth’s mass is 6.0 × 1024 kg. Show all your work, assuming the...
Friday, January 27, 2012 at 6:11pm by Pat

Physics 11th grade 2
1) A 20 kg rock is on the edge of a 100 m cliff. a. What potential energy does the rock possess relative to the base of the cliff? b. The rock falls from the cliff. What is the kinetic energy just before it strikes the ground? c. What speed does the rock have as it strikes the...
Monday, March 11, 2013 at 5:13pm by Isis

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 rock climber weights 550N and is carrying a backpack that weighs 50N. how much total work has been done after she climbs 12m
Tuesday, January 24, 2012 at 6:44pm by Anonymous

Physics
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 14.8 kg and 1.89 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the rock.
Monday, November 22, 2010 at 3:33pm by Mike

physics
A geologist finds that a Moon rock whose mass is 9.97 kg has an apparent mass of 6.40 kg when submerged in water. What is the density of the rock?
Tuesday, January 24, 2012 at 5:29pm by B

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 1.1 kg lizard lies on a flat rock tilted. A person decides to tilt the rock hoping that the lizard falls off. The rock is tilted at an angle of 15 degrees with respect to the horizontal. The coefficient between the rock and the lizard is .16. What is the acceleration of the ...
Monday, November 19, 2012 at 7:34pm by Elle

Earth Science
1. In the classroom during a visual inspection of a rock, a student recorded four statements about the rock. Which statement about the rock is an observation? (1)The rock formed deep in Earth’s interior. (2)The rock cooled very rapidly. (3)The rock dates from the Cambrian ...
Wednesday, June 18, 2008 at 12:54pm by Anonymous

Physics
Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 76 degree angle to each other--a 6.2 kg piece at 26.7 m/s and a 5.5 kg piece at 23.3 m/s. Calculate the speed of the third piece, if it has a mass of 3.2 kg.
Sunday, January 16, 2011 at 12:23am by Joan

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

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 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

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

Science
find the density of the two rocks. The jagged rock has a mass of 56 grams. this rock therefore has a density of ?
Thursday, September 22, 2011 at 6:51pm by Anonymous

physics
The total energy of a 2.00 kg falling rock is 5000 J. If its potential energy is 1975 J, the kinetic energy of the rock is ____ J. The speed of the rock is ___ m/s
Monday, March 28, 2011 at 12:03pm by courtney

Physics
A rock climber part way up a cliff face drops a piton and it falls for 2.0 s before hitting the ground. How high up is he?
Tuesday, November 2, 2010 at 12:10am by Pauline

College Physics
Part A) A 2.2 kg rock is released from rest at the surface of a pond 1.8 m deep. As the rock falls, a constant upward force of 5.0 N is exerted on it by water resistance. Let y=0 be at the bottom of the pond. Calculate the nonconservative work, Wnc , done by water resistance ...
Wednesday, March 3, 2010 at 9:49pm by Kyle

earth
#40 which type of rock is a result of a rock changing by heat and pressure? a. metamorphic rock b. igneous rock c. sedimentary rock d. metal ores
Sunday, January 13, 2013 at 3:49pm by ?

physics
c) A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has the speed of 29 m/s. Assuming that the air resistance can be ignored, find i. the initial speed of the rock (5 marks) ii. the ...
Thursday, September 6, 2012 at 12:02pm by charley

chemistry/physics
If a rock climber accidentally drops a 69.0 g piton from a height of 305 meters, what would its speed be just before striking the ground? Ignore the effects of air resistance.
Wednesday, February 6, 2013 at 12:10am by Brianna

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 rock of mass 0.086 kg is thrown upward with an initial speed of 13 m/s. Find the work done by gravity on the rock from the time it leaves the thrower's hand until it reaches the highest point on its trajectory. Hint: You do not have to calculate the rock's maximum height.
Wednesday, July 11, 2012 at 11:49am by Sierra

Physics
Example 1: (Rock A) is thrown against a larger stationary rock(Rock B). considering the following possibilities... 1. Rock A bounces off of Rock B 2. Rock A splits into two pieces off of Rock B 3. Rock A explodes into many pieces off of Rock B What factors are affecting the ...
Friday, November 8, 2013 at 3:53pm by Cole

Physics
a small rock with mass 0.20 kg is released from rest at point A which is at the top edge of a large, hemispherical bowl with radius R = .5m. assume that the size of the rock is small compared to R, so that the rock can be treated as a particle, and assume that the rock slides ...
Tuesday, October 23, 2012 at 3:24pm by Frankie

calculus 1
estimates, using values of n from 5 to 50: 5: 56.0341 10: 56.0401 15: 56.0434 20: 56.0456 25: 56.0471 30: 56.0483 35: 56.0491 40: 56.0498 45: 56.0503 50: 56.0507 wolframalpha.com calculates 56.0528 just type in arc length 56cos(x), x = 0 .. pi/2
Monday, August 27, 2012 at 3:49pm by Steve

Physics
A rock is thrown into a railroad car standing on a level frictionless track. If the rock has a mass of ms = 1.100 kg and is tossed with a velocity v = 6.3 m/s, how far up will the car go (mc = 5.400 kg) before stopping? Please explain
Saturday, January 4, 2014 at 4:18pm by Harriet

physics
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has a speed of 28 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b) Find the greatest ...
Thursday, November 29, 2012 at 8:31pm by jorge

chem, help please
A 0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. The velocity of the rock is 4.50 m/s. What is the centripetal force acting on the rock? how do i find centripetal force??
Friday, November 19, 2010 at 11:17am by Jon

Physics, Please Help
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1025 kg. By using a lever arm (a piece of wooden board) and a fulcrum (or pivot point) the homeowner will have a better chance of moving the rock. The homeowner places the fulcrum 24.4 cm from the ...
Sunday, November 25, 2012 at 7:02pm by Mike

physics..help PLEASE!
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 35 m high. When it hits the ground at the base of the cliff the rock has a speed of 28 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b) Find the greatest ...
Wednesday, October 8, 2008 at 12:42am by kelsey

Physics
A rock of mass m = 1.8 kg is tied to a string of length L = 2.4 m and is twirled in a vertical circle as shown in the figure below. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when ...
Wednesday, October 26, 2011 at 11:53pm by Freud

College Physics
A 2.2 kg rock is released from rest at the surface of a pond 1.8 m deep. As the rock falls, a constant upward force of 5.0 N is exerted on it by water resistance. Let y=0 be at the bottom of the pond. Calculate the nonconservative work, Wnc , done by water resistance on the ...
Wednesday, March 3, 2010 at 12:59am by Kyle

physics
The 49 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The climber has reduced push to verge of slip. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 1.2 and 0.8, ...
Monday, October 26, 2009 at 9:55am by K

Earth Science
1.Which statement made by a student after examining a rock specimen is an inference? (1)The rock is of igneous origin. (2)The rock has rounded edges. (3)The rock is light-colored. (4)The rock contains large crystals. Is it (1)?
Wednesday, June 18, 2008 at 1:02pm by Anonymous

physics
A 17-kg rock is on the edge of a 103-m cliff. (a) What potential energy does the rock possess relative to the base of the cliff? 1 . J (b) The rock falls from the cliff. What is its kinetic energy just before it strikes the ground? 2 . J (c) What speed does the rock have as it...
Thursday, May 10, 2012 at 11:51am by Amelia

physics
1. V = 30.5 * 61 * 30.5 = 56,745cm^3. 2. m = 56,745cm^3 * 1g/cm^3 = 56,745g. 3. m = 56,745g / 1000g/kg = 56.745kg. 4. V = 1 * 2 * 1 = 2ft^3. 2ft^3 * 62.4lb/ft^3 = 124.8 Lbs.
Tuesday, September 13, 2011 at 9:19am by Henry

physical science
A force of 1 N is exerted on a 10-kg rock. What is the acceleration of the rock?
Thursday, December 15, 2011 at 8:47pm by Fonda

physics
A 17-kg rock is on the edge of a 103-m cliff. (a) What potential energy does the rock possess relative to the base of the cliff? . J (b) The rock falls from the cliff. What is its kinetic energy just before it strikes the ground? J
Friday, May 11, 2012 at 7:53pm by Brianna

physics
A rock is dropped. How fast will the 5.0 kg rock be traveling in 4.0s if a 5.o N force of air resistance acts on it?
Thursday, December 16, 2010 at 9:04pm by Nate

physics
A 40 kg rock is accelerating down a hill at 3 m/s2. What is the net force exerted on the rock
Wednesday, January 19, 2011 at 6:49pm by Anonymous

physics- please help!
1 lb =0.454 kg 125 lb= 56.7 kg (max mass) mg=56.7•9.8 =555.66 N
Friday, July 20, 2012 at 4:04pm by Elena

Physics
A 4.2 kg rock is initially at rest at the top of a cliff. Assuming the rock falls into the sea at the foot of the cliff and that its kinetic energy is transferred entirely to the water, how high is the cliff if the temperature of 1.5 kg of water is raised 0.10°C?
Sunday, January 13, 2013 at 6:51pm by I'm going to die please help

physics
The average density of the rock is 2.00*10^3 kg/m^3, which is twice that of water. That is because the buoyancy force in water equals half the weight in air. The solid part (with mass 5.0 kg/m^3) needs to occupy only 40% of the volume in order for the rock to have a total mass...
Tuesday, December 6, 2011 at 5:35am by drwls

Math Ms.Sue please
1. 2/3 - 5/4 -3 -3/12 23/12 -17/12 2. -6.1 + 1.7 7.8 -4.4 -7.8 4.4 3. -1.8 - 3.9 -2.1 5.7 2.1 -5.7 4. A mountain climber ascends a mountain to its peak. The peak is 12,740 feet above sea level. The climber then descends 200 feet to meet a fellow climber. Find te climber's ...
Thursday, September 12, 2013 at 5:35pm by Charlotte

Physics
A mountain climber dangles his water bottle and feels the bottle makes an angle of 25 degrees with respect to the vertical line. If his acceleration takes 18 seconds, calculate the speed of the climber.
Friday, March 14, 2014 at 7:06pm by Bert

physics
a. V = Vo + g*t = 17 m/s. Vo = 17-g*t = 17-(-9.8*2.2) = 38.56 m/s. b. V = 38.56 -9.8*4.4 = -4.56 m/s. The negative sign means the rock is on its' way down.
Tuesday, July 2, 2013 at 9:31pm by Henry

Physic
A large rock with a mass of 38.2 kg is rolling at a speed of 4.8 m/s. How much power is needed to stop the rock in 7.2 seconds?
Friday, February 21, 2014 at 10:10pm by Amanda

College science
Im in Chem. but looks like physics.. If a rock climber accidentally drops a 70.5 g piton from a height of 295 meters, what would its speed be just before striking the ground? Ignore the effects of air resistance.
Saturday, February 1, 2014 at 4:34pm by Max

Physics
additional volume of water displaced = .0234 * pi * .0425^2 = 1.33*10^-4 m^3 density of water = 1000 kg/m^3 approx so mass of rock = 1.33*10^-1 Kg weight of rock = m g = 9.81*.133 = 1.3 Newtons
Sunday, June 17, 2012 at 6:13pm by Damon

Tulane Physics
a rock is thrown unward off a cliff at a 45 degree angle. THe rock falls back to the elevation it was thrown from after 3.56 seconds. It hits the water 5.31 seconds after it was thrown. How high is the cliff? what is the horizontal distance from the cliff to the point in the ...
Wednesday, September 14, 2011 at 6:45pm by laura

Physics
A man throws a rock of mass m = 0.310 kg straight up into the air. In this process, his arm does a total amount of work Wnet = 105 J on the rock. Calculate the maximum distance, h, above the man's throwing hand that the rock will travel. Neglect air resistance.
Sunday, May 27, 2012 at 9:05pm by James

math
Oops. I goofed. Sorry. My fingers got ahead of my brain. I think the problem means that 8% of a number is 56 kg. 0.08 x = 56 x = 56 / 0.08 x = 700
Saturday, November 1, 2008 at 8:05pm by Ms. Sue

Chemistry
The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of Pb?
Tuesday, April 1, 2008 at 4:16pm by Kate

Physics
What is the minimum speed the rock can have without the string becoming "slack"? (The rock is traveling in vertical circle. Assume that m = 1.6 kg and r = 0.48 m.)
Friday, June 22, 2012 at 5:22pm by Sierra

physics
A golf ball threw by a friend from a window of her apartment collides with a rock that you throw at the same moment at x=44.07m and y=13.63 m, and t=2.56 s. If the ball was dropped from a height of h=45.78 m, determine the initial velocity of the rock(write de x- and y- ...
Tuesday, February 28, 2012 at 5:14am by abad

physics
A 4.2 kg rock is initially at rest at the top of a cliff. Assume that the rock falls into the sea at the foot of the cliff and that its kinetic energy is transferred entirely to the water. How high is the cliff if the temperature of 1.5 kg of water is raised ...
Monday, February 13, 2012 at 12:19am by Anonymous

Physics
A small first-aid kit is dropped by a rock climber who is descending steadily at 0.5 m/s. (a) After 2.6 s, what is the velocity of the first-aid kit?
Monday, March 24, 2008 at 7:58am by John

physics
A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m^3. The mass of the wire is small enough that its effect on the tension in the wire can be neglected. The upper end of the wire is held ...
Friday, April 27, 2012 at 1:46pm by anonymous

class
WHAT DOES A 138 N ROCK WEIH IF IT IS ACCELERATING UPWARD AT 12 M/S DOWNWARD AT3.5 M/S . C WHAT WOULD BE THE ANSWERS TO PARTS (A)AND (B) IF THE ROCK HAD A MASS OF138 Kg WHAT WOULD BE THE ANSWERS TO PARTS A AND B IF THE ROCK WERE MOVING WITH A CONSTANT UPWARD VELOCITY OF 23 M/S?
Tuesday, April 17, 2012 at 1:23pm by mhamd

physics
A prospector finds a solid rock composed of granite ( = 2650 kg/m3) and gold. The volume of the rock is 3.05 10-4 m3 and its mass is 3.57 kg. What mass of gold is contained in the rock? I thought that I could used some ratio, but I have no idea how. Our teacher hasn't even ...
Tuesday, June 19, 2007 at 11:41am by JJ14

math
so it would be like, 5/8 ? 6/7 8,16,24,32,40,48,56,64 7,14,21,28,35,42,49,56 LCD IS 56 so now i do 56/7=8*6=48 6/7=48/56 56/8=7*5=35 so, 5/8=35/56 5/8 (35/56) < 6/7 (48/56)
Tuesday, February 14, 2012 at 4:47pm by john

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members