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April 24, 2014

# Search: A ball of mass 5.1 kg moving with speed of 1.9 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?

Number of results: 26,392

physics
a ball of mass 0.1kg makes an elastic head on collision with a ball of unknown mass,initially at rest .if the 0.1kg ball rebounded at one third of its original speed, what is the mass of the other ball?
Monday, September 12, 2011 at 8:05pm by gallium

Physics for Life science
You are on a skateboard of mass 5.00kg with a ball in hands (mass of the ball is 600kg). You throw the ball forward horizontally and find that you recoil back with 2.0m/s. What is the forward speed of the ball? (Use your own mass where needed).
Tuesday, June 1, 2010 at 6:06am by TangenT

college physics
A small ball of mass m is aligned above a larger ball of mass M = 0.79 kg (with a slight separation), and the two are dropped simultaneously from height h = 2.0 m. (Assume the radius of each ball is negligible relative to h). (a) If the larger ball rebounds elastically from ...
Thursday, November 12, 2009 at 9:01pm by Steve

Physics Part 1
Rick is playing billiards and hits the cue ball. It makes contact with the 8 ball head on. If before the collision the cue ball was travelling at 2.4 m/s and after the collision the 8 ball was traveling at 2.13 m/s. How fast and in what direction is the cue ball traveling? (...
Saturday, November 9, 2013 at 7:27pm by CC

physics
A red ball of mass 0,6 kg,travelling at 5 m.s^-1 on a frictionless surface ,stikes a stationary green ball of mass 0,3 kg.after the collision,the red ball continues to move in its original direction at 2m.s^-1,while the green ball moves in front of the red ball. Determine the ...
Wednesday, February 5, 2014 at 1:52pm by Mashego clinton

science
jason wants to know the mass of air in his soccer ball. to find the mass he should ? He should add the mass or subtract the mass of an inflated ball or empty ball ?
Monday, April 26, 2010 at 3:32pm by Ashley

physics
A ball mass 500g rolls at a velocity of 2m/s and hits another ball of mass 250g 1.What is the velocity of a small ball if the bigger ball immediately stops after collision? 2.What is the velocity of the bigger ball if it rolls in the same direction with the smaller ball at 0....
Saturday, January 21, 2012 at 1:07pm by lufuno nemugumoni

physics
a ball of mass m , moving with uniform speed, collides elastically with another stationary ball.the incident ball will lose maximum kinetic energy when the mass of the stationary ball is?
Wednesday, April 11, 2012 at 9:02am by srikala

physics
Ball 2, with a mass of 30kg, is moving to the left at 10m/s. With what velocity should Ball 1, with a mass of 10kg, move to the right and collide with Ball 2, so that Ball 1 rebounds with a velocity of 30m/s, and Ball 2 with a velocity of 10 m/s, after the collision? Assume ...
Wednesday, February 8, 2012 at 10:30pm by Toni

physical science
19. (2 points) Ball 2, with a mass of 30kg, is moving to the left at 10m/s. With what velocity should Ball 1, with a mass of 10kg, move to the right and collide with Ball 2, so that Ball 1 rebounds with a velocity of 30m/s, and Ball 2 with a velocity of 10 m/s, after the ...
Thursday, February 13, 2014 at 8:33pm by anonymous

PHYSICS (most is worked)
A glass ball, ball A, of mass 6.0 g moves at a velocity of 18.0 cm/s. It collides with a second ball, ball B, of mass 8.0 g, moving along the same line of velocity of 11.0 cm/s. After the collision, ball A is still moving, but with a velocity of 10.0 cm/s. Ball A's original ...
Monday, January 28, 2013 at 12:45pm by Jessica

Physics
A cue ball (mass = 0.150 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.45 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second ball of equal mass ...
Sunday, October 24, 2010 at 4:48pm by Xavier

physics
A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.60 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second ball of equal mass ...
Wednesday, December 7, 2011 at 7:03pm by s

physics
A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.60 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second ball of equal mass ...
Wednesday, December 7, 2011 at 8:34pm by Anonymous

Physics
A ball of mass oscillates on a spring with spring constant = 200 . The ball's position is described by (0.350 ) 16.0 with measured in seconds. -What is the amplitude of the ball's motion? -What is the frequency of the ball's motion? -What is the value of the mass ? - Ronald ...
Wednesday, April 28, 2010 at 9:39am by R

Physics
A glass ball, ball A, of mass 6.0 g moves at a velocity of 19.0 cm/s. It collides with a second ball, ball B, of mass 9.0 g, moving along the same line of velocity of 11.0 cm/s. After the collison, ball A is still moving, but with a velocity of 8.0 cm/s. a) What was ball A's ...
Wednesday, November 7, 2007 at 1:11pm by Jessica

physics
ball 1 has a mass of 5kg and a ball 2 has a mass of 10kg they both are dropped off a 20m tower. the force of gravity on the first ball is F1 and the force of gravity on the second ball is F2 what is the ratio of F1 to F2
Saturday, November 24, 2012 at 10:02pm by yocelyne t

physics
A ball of mass 0.075 kg is fired horizontally into a ballistic pendulum. The pendulum mass is 0.350 kg. The ball is caught in the pendulum, and the centerof mass of the system rises a vertical distance of 0.145 m in the earth's gravitational field. What was the original speed ...
Sunday, March 28, 2010 at 9:01pm by april

physics
A softball of mass 0.220 kg that is moving with a speed of 6.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 4.8 m/s. Calculate the mass of...
Wednesday, December 9, 2009 at 6:21pm by Shane

physics
Figure 8-31 shows a ball with mass m = 1.0 kg attached to the end of a thin rod with length L = 0.56 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. (a) What initial speed must be given the ball so that it reaches the ...
Monday, February 18, 2008 at 11:30am by dawn

AP physics B
A billiards cue ball of mass 0.380 kg has a perfectly elastic head-on collision with a standard pool ball. The second pool ball which started at rest travels with a speed which is half the original speed of the cue ball. (a) Calculate the mass of the pool ball. kg (b) ...
Friday, November 2, 2012 at 5:54pm by Need help fast

Physics - Center of Mass
A baseball player uses a bat with mass mbat to hit a ball with mass mball. Right before he hits the ball, the bat's initial velocity is 36 m/s, and the ball's initial velocity is -20 m/s (the positive direction is along the positive x-axis). The bat and ball undergo a one-...
Saturday, June 16, 2012 at 7:44pm by Ray

physics
A ball of mass 0.075 kg is fired horizontally into a ballistic pendulum. The pendulum mass is 0.350 kg. The ball is caught in the pendulum, and the centerof mass of the system rises a vertical distance of 0.145 m in the earth's gravitational field. What was the original speed ...
Sunday, March 28, 2010 at 9:03pm by sara

science
Ball 2 with a mass of 30 kg, is moving left at 10 m/s. At what velocity should ball 1, with a mass of 10 kg, move to the right and collide with 2, so that ball 1 rebounds with a velocity of 10 m/s. assume that the collision is perfectly elastic.
Tuesday, February 21, 2012 at 11:12am by Milli

A hole is punched in a kickball. Most of the air escapes and the ball collapses and shrinks. What happens to the ball? A. The volume of the ball decreases. B. The mass of the ball does not change.
Wednesday, November 19, 2008 at 6:18pm by Britty

physics
A girl of mass 60 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 11 m/s, and it bounces back with this same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the wall by the ball? A...
Wednesday, June 24, 2009 at 11:23pm by larry

Physics
A girl of mass 55 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s, and it bounces back with the same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the wall by the ball? A) ...
Friday, March 30, 2012 at 10:07pm by Alex

Physics
In the figure, two balls are located in deep space. The black ball has mass 56kg and the red ball has mass 17kg. The distance between the two balls is r=24cm. (a) Find the magnitude of the acceleration of the red ball. m/s2 (b) If r is 5 times larger, with what factor will the...
Thursday, March 8, 2012 at 9:13pm by Sarah

physics
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 3.9 m/s. (a) Calculate the ...
Sunday, January 10, 2010 at 5:00pm by Anonymous

A softball of mass 0.220 kg that is moving with a speed of 6.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 4.8 m/s. (a) Calculate the ...
Thursday, December 10, 2009 at 6:04pm by Anonymous

Physics
A 0.421-kg ball has an elastic, head-on collision with a second ball that is initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic energy (ΔK/K) is ...
Wednesday, June 6, 2012 at 9:04am by James

Physics
A ball is moving at 82 m/s when it hits a ball at rest which has a mass fours times as big as its own. The formally stationary ball leaves the collision with a speed of 7.5 m/s what is the final velocity of the first ball?
Wednesday, March 21, 2012 at 3:53pm by Becky

physics
A 156 gram 8 ball rolls across a pool table at 2 m/s when it collides with a 7 ball of equal mass rolling in the opposite direction at 1.5 m/s. The 8 ball bounces backwards at 1 m/s. Find the momentum of the 7 ball.
Tuesday, June 12, 2012 at 5:00pm by someone

Physics
A 0.100 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a).what is the mass of the second ball? (b).What fraction of the original kinetic energy (ΔKE/KE) ...
Sunday, January 2, 2011 at 8:34am by John

Physics
A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 5.40 m/s at the bottom of the rise, ...
Monday, November 3, 2008 at 9:32am by Kyle

science
A small ball with a mass of 30.0 g and a charge of −0.200 μC is suspended from the ceiling by a string. The ball hangs at a distance of 5.00 cm above an insulating floor. If a second small ball with a mass of 50.0 g and a charge of 0.400 μC is rolled directly ...
Monday, September 17, 2012 at 1:39pm by alia

physics
A small ball with a mass of 30.0 g and a charge of −0.200 μC is suspended from the ceiling by a string. The ball hangs at a distance of 5.00 cm above an insulating floor. If a second small ball with a mass of 50.0 g and a charge of 0.400 μC is rolled directly ...
Monday, September 17, 2012 at 2:32pm by alia

Physics
It takes 2.5 s for a small ball released from rest from a tall building to reach the ground. The mass of the ball is 0.05 kg. Calculate the height from which the ball is released. Ok so I have the time, initial velocity, and the acceleration. But the mass totally throws me off...
Tuesday, October 9, 2007 at 1:07pm by Lindsay

A golfer, driving a golf ball off the tee, gives the ball a velocity of +40 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 4.05E-3s. (a) What is the change in momentum of the ball? (b) Determine the average force applied to the ball...
Friday, November 5, 2010 at 9:21am by jonathan

Physics
A 0.280 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic energy (ΔKE/KE) ...
Wednesday, November 11, 2009 at 2:12pm by Ashley

PHYSICS!!
I've tried this problem again and again using conservation of momentum and energy but I am not having any luck: A ball of mass 0.300kg that is moving with a speed of 8.0m/s collides head-on and elastically with another ball initially at rest. Immediately after the collision, ...
Friday, October 11, 2013 at 12:06am by Alison

a.the gravitational force between 2 electrons 1.00m apart is 5.42x10^-71 N. Find the mass of an electron. b.2 spherical balls are placed so their centres are 2.6m apart. The force between the balls is 2.75x10^-12N. What is the mass of each ball if one ball is twice the mass of...
Tuesday, December 8, 2009 at 11:57pm by Anonymous

physics
Billiard ball A of mass mA=0.400kg moving with speed vA=1.80m/s strikes ball B, initially at rest of mass mB=0.500kg. As a result of the collision, ball A is deflected off at an angle of 30.0 degrees with a speed of vA=1.10m/s. (a) Taking the x axis to be the original ...
Thursday, April 14, 2011 at 9:32pm by shahzi

physics
A basketball of mass 0.602 kg is passed to a player of mass 83.0 kg who jumps off the floor while catching the ball. The player's center of mass is instantaneously at rest just before he catches the ball, which is initially moving at a velocity of 11.5 m/s, directed 30.0° ...
Thursday, November 29, 2012 at 10:32pm by Anthony

physics
Ball 1, with a mass of 180 g and traveling at 18 m/s, collides head on with ball 2, which has a mass of 370 g and is initially at rest (a) What are the final velocities of each ball if the collision is perfectly elastic? (b) What are the final velocities of each ball if the ...
Tuesday, October 26, 2010 at 8:33pm by Lucy

physics
A ball has a mass of 0.14 kg and is pitched w/ velocity of 38 m/s. The batter hits the ball & departs w/ a velocity of 58 m/s. Contact time b/w the bat and ball is 4.0 x 10-3seconds. What is avg force exerted on ball?
Saturday, December 11, 2010 at 12:45pm by jennifer

Physics - Momentum
A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-third its original speed. What is the mass of the second ball?
Thursday, December 10, 2009 at 6:04pm by DJ

Physics
A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-fourth its original speed. What is the mass of the second ball?
Thursday, December 10, 2009 at 6:22pm by Eric

Physics
A woman, driving a golf ball off a tee, gives the ball a velocity of 28.0 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 6 x 10-3 s. 3a. What is the change in momentum of the ball
Tuesday, April 13, 2010 at 8:37am by Arnold Manguy

physic
Two spherical balls are placed so their centers are 2.6 m apart. The force between the two balls is 2.75 x 10-12 N. What is the mass of each ball if one ball is twice the mass of the other ball?
Monday, January 18, 2010 at 11:02am by susan

Physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
Monday, June 17, 2013 at 12:29am by Abhishek Ranjan

physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
Monday, June 17, 2013 at 6:25am by Anonymous

physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
Tuesday, June 18, 2013 at 1:55am by jack

PHYSICS
Two balls collide on a horizontal, frictionless table. Ball A has a mass of 0.175 kg and travelling at 1.20 m/s [E 40o S]. Ball B has a mass of 0.225 kg and is travelling at 0.68 m/s [E]. The velocity of ball B after collision is 0.93 m/s [E 23o S]. What is the velocity of ...
Thursday, May 10, 2012 at 8:11pm by myra

physics
at a ball game consider a baseball of mass m=0.15 that falls directly downward at a speed v=40m/s into the hands of a fan. what impulseft must be supplied to bring the ball to rest? if the ball is stopped in 0.3s, what is the average force of the ball on the catchers hand?
Thursday, October 15, 2009 at 7:52pm by saba

physics
at a ball game consider a baseball of mass m=0.15 that falls directly downward at a speed v=40m/s into the hands of a fan. what impulseft must be supplied to bring the ball to rest? if the ball is stopped in 0.3s, what is the average force of the ball on the catchers hand?
Thursday, October 15, 2009 at 7:55pm by Anonymous

physics
at a ball game consider a baseball of mass m=0.15 that falls directly downward at a speed v=40m/s into the hands of a fan. what impulseft must be supplied to bring the ball to rest? if the ball is stopped in 0.3s, what is the average force of the ball on the catchers hand?
Thursday, October 15, 2009 at 7:57pm by saba

PHYSICS!!!! help!!!
A perfectly spherical, but squishable ball of radius 10 cm is blown up to an internal pressure of 2 atm. The ball is placed between two perfectly vertical walls and the walls are slowly squeezed together. Initially the ball slips down the walls, but when the walls are 18 cm ...
Sunday, April 28, 2013 at 4:35am by your hero....

physics
Each croquet ball in a set has a mass of 0.45 kg. The green ball, traveling at 12.6 m/s, strikes the blue ball, which is at rest. Assuming that the balls slide on a friction- less surface and all collisions are head-on, find the final speed of the blue ball in each of the ...
Tuesday, January 5, 2010 at 7:41pm by Anonymous

Physics. LAST PROBLEM!!
A small metal ball with a mass of m = 82.5 g is attached to a string of length l = 1.72 m. It is held at an angle of θ = 58.5° with respect to the vertical. The ball is then released. When the rope is vertical, the ball collides head-on and perfectly elastically with an ...
Tuesday, March 26, 2013 at 6:29pm by Elena

Physics
A ball with a mass of 5.8 kg is moving to the right at 10.3 m/s and collides with a stationary ball of mass 10.9 kg. After the collision, the 5.8 kg ball moves to the right, but at an angle of 20° below the horizontal, at a speed of 4.3 m/s. Find the speed of the 10.9 kg ball ...
Thursday, December 20, 2012 at 10:24pm by Shawn

Physics
Two balls, one of gold with a mass of 100 kg and one of wood with a mass of 1 kg, are suspended 1 meter apart. What is the attractive force, in newtons, of a. the gold ball acting on the wooden ball? b. the wooden ball acting on the gold ball?
Thursday, September 12, 2013 at 2:28pm by vv

Physics
Two balls, one of gold with a mass of 100 kg and one of wood with a mass of 1 kg, are suspended 1 meter apart. What is the attractive force, in newtons, of a. the gold ball acting on the wooden ball? b. the wooden ball acting on the gold ball?
Tuesday, September 17, 2013 at 7:01am by vv

physics
A tennis player smashes a serve so that the racquet is in contact with the ball for 0.055 s, giving it an impulse of 2.5 N ⋅ s. What average force was applied during this time? Assume that the vertical motion of the ball can be ignored. If the ball's mass is 0.060 kg, ...
Wednesday, May 9, 2012 at 8:12pm by dreamygirl

Physics
A rubber ball weighs 95 N a. what is the mass of the ball ? b.what is the acceleration of the ball if an upward force of 69N is applied
Sunday, November 29, 2009 at 2:12am by Anonymous

Physics
A wooden block and a lead ball are connected by a light string that passes over a frictionless pulley. The block has a mass of 6kg and the ball has a mass of 2kg. after they are released from rest, the block will slide along the wooden ramp. a.) which direction will the block ...
Sunday, October 17, 2010 at 8:04pm by Sadie

physics
during a circus act, an elderly performer thrills the crowd by catching a cannon ball shot at him the ball mass is 10.0 kg and ball velocity is 8 m/s while the performer mass is 65 kg. if the performer is on nearly friction-less roller skates, what is his recoil velocity.
Sunday, March 23, 2014 at 11:35pm by Mohanad

physics
A soccer ball with mass 0.410 kg is initially moving with speed 4.30 m/s. A soccer player kicks the ball, exerting a constant force of magnitude 44.0 N in the same direction as the ball's motion. Over what distance must the player's foot be in contact with the ball to increase...
Wednesday, February 25, 2009 at 8:07pm by nikki

Gen physics
Two balls are approaching each other head-on. Their velocities are +11.9 and -10.5 m/s. Determine the velocity of the center of mass of the two balls if (a) they have the same mass and (b) if the mass of one ball (v = 11.9 m/s) is twice the mass of the other ball (v = -10.5 m/...
Monday, July 22, 2013 at 5:52pm by ODU

physics
Two balls are approaching each other head-on. Their velocities are +11.9 and -10.5 m/s. Determine the velocity of the center of mass of the two balls if (a) they have the same mass and (b) if the mass of one ball (v = 11.9 m/s) is twice the mass of the other ball (v = -10.5 m...
Thursday, July 25, 2013 at 6:35pm by tcc

physics
If the mass of ball A is 5kg and ball B is 75kg, how high should ball B be dropped from so that when B collides with A they stick together and travel to point X?
Thursday, January 19, 2012 at 11:46am by Andy

Physics
A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball traveling at 6.25 m/s ...
Thursday, November 14, 2013 at 6:24pm by Leslie

physics
Consider a ball of mass m1 moving with a velocity u1 collides elastically with a ball of mass m2 at rest.Show that the maximum energy transfer takes place when m1=m2.
Friday, September 2, 2011 at 9:34am by Nantu

physics
two balls collide in a head on elastic collision and rebound in opposite directions. One ball has velocity 1.2 before the collision and -2.3 after. the other ball has a mass of 1.1 kg and a velocity of -4.2 before the collision. What is the mass of the first ball? What is the ...
Thursday, January 6, 2011 at 10:21pm by jay

Physics
Jen drops a ball with a mass of 0.100 kg from a height of 20.0 m The initial downward velocity of the ball is 5.00 m/s. What is the kinetic energy of the ball after it has fallen 10.0 m?
Thursday, September 13, 2012 at 1:41pm by Anonymous

physics
a ball is dropped from a tower of height 5 m. it accelerates uniformly at 10m/s .if mass of the ball is 2 kg ,find the momentum transferred by a ball to the ground on striking.
Wednesday, October 9, 2013 at 1:58am by TINA

physics
A heavy ball A of mass 10kg is moving at a velocity of 10m/s to the right. When it hits a stationary ball B of mass 5kg, ball B moves at a velocity of 10m/s to the right. a) explain whether it is inelastic collision or not.
Saturday, November 20, 2010 at 7:46am by Anonymous

Physics
A ball of mass m(1) = 0.250 kg and initial v(1) = 5.00 m/s collides head-on with a ball of mass m(2) = 0.800 kg that is initially at rest. What are the velocities of the balls after the collision if they stick together?
Friday, January 11, 2013 at 3:49pm by Jackie

Physics
Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...
Sunday, December 21, 2008 at 3:05am by jason

physic
Two balls are conneted by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.81 kg and is held 0.5 m above the ground. Ball 2 has a mass of 6.3 kg and is held 0.28 m above the ground. When the balls are released, ball 2 falls to the ground, ...
Sunday, January 15, 2012 at 12:29am by Anonymous

physics impulse
a baseball has a mass of 0.145kg. the ball is crossing the plate horizontally at 40 m/s when the batter hits the ball. The final velocity of the ball is 50 m/s stright up. what is the impulse that the batter gives the ball?
Sunday, December 12, 2010 at 11:29pm by Anonymous

physics
Ball 1, with a mass of 100g and traveling at 12 m/s , collides head on with ball 2, which has a mass of 340g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic? What are the final velocities of each ball if the collision ...
Sunday, October 18, 2009 at 2:14pm by Dan

physics
A ball weighing 1.78 N is shot through a launcher, achieving a speed ( from rest) of 41 m/s in 0.28 s. A) What is the mass of the ball? B) What is the acceleration of the ball as it moves through the launcher? C) What average force acted on the ball to make it accelerate?
Saturday, November 19, 2011 at 6:08pm by mack

physics
A ball of mass Ml = 0.250 kg and velocity V01 = +5.00 m/s (see Figure) collides head-on with a ball of mass M2 = 0.800 kg that is initially at rest. No external forces act on the balls. a) What was the kinetic energy of the first ball before the collision; b) If the collision ...
Saturday, May 21, 2011 at 5:02pm by Fabiana

ap phyiscs
A bowler throws a bowling ball of radius R=11 cm down a lane. The ball slides on the lane, with initial speed v(of the center of mass)=7 m/s and initial angular speed =0. The coefficient of kinetic friction between the ball and the lane is .25. The kinectic frictional force fk...
Sunday, February 10, 2008 at 8:57pm by kristen

Physics
Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum? (b) Which ball has greater kinetic energy? Thank you
Thursday, May 2, 2013 at 11:38pm by Kathy

A ball of Styrofoam (ρ = 100 kg/m3) is totally submerged in water. The ball has a mass of 300.0 g (it could be a pretty big block). What is the volume of the ball? If a string holds the ball when it’s in the water, what’s the tension in the string?
Wednesday, January 15, 2014 at 1:29am by unknown

physics
Two balls are approaching each other head-on. Their velocities are +9.30 and -12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) (a) They have same mass. m/s (b) The ...
Wednesday, November 9, 2011 at 11:48pm by Taylor

Physics
A ball of mass m makes a head-on elastic collison with a second ball (at rest) and rebounds in the opposite direction with a speed equal to 1/4 it's original speed. What is the mass of the second ball? I would really apprieciate it if ya'll would show steps. I have been ...
Friday, November 9, 2012 at 12:52pm by Henry

Physics
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.10 m/s and rebounds with a velocity of -2.00 m/s. The ball remains in contact with the cushion for a ...
Sunday, October 7, 2012 at 12:13am by Cheng

physics
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.30 m/s and rebounds with a velocity of -1.90 m/s. The ball remains in contact with the cushion for a ...
Monday, November 11, 2013 at 8:50am by bb

Physics
I'm super confused about how to approach this problem. Please help. A ball of Styrofoam (ρ = 100 kg/m3) is totally submerged in water. The ball has a mass of 300.0 g What is the volume of the ball? If a string holds the ball when it’s in the water, what’s the tension in ...
Friday, January 17, 2014 at 1:03pm by Sandy

AP Physics
a ball of mass 3 kg is moving with a velocity of 10 m/s. This ball collides with a second ball of mass 0.5 kg that is at rest. After the collison, the first ball is at rest. What is the velocity after the collison of the second ball if the collison is inelastic?
Tuesday, October 18, 2011 at 11:51pm by Kailyn

AP Physics
a ball of mass 3 kg is moving with a velocity of 10 m/s. This ball collides with a second ball of mass 0.5 kg that is at rest. After the collison, the first ball is at rest. What is the velocity after the collison of the second ball if the collison is inelastic?
Tuesday, October 18, 2011 at 11:53pm by Kailyn

physics
a child on a beach kicks a beach ball, giving it an initial velocity of 4.0m/s.It was sitting on the ground when given the kick. The ball lands on the beach 5.0 m away with a speed of 2.2 m/s just before it hits. the final landing place is at the same level as the place where ...
Monday, November 7, 2011 at 8:28pm by bec

Physics Help
A ball of mass 1.76 kg is tied to a string of length 4.19 m as shown in Figure P6.50. The ball is initially hanging vertically and is given an initial velocity of 9.4 m/s in the horizontal direction. The ball then follows a circular arc as determined by the string. What is the...
Monday, September 26, 2011 at 8:39pm by Kaylee

physics
the coefficient of restitution between the ball and the floor is 0.60 If the ball is drop from rest at the height of 6.6 m from the floor. Find a) what is the maximum height will the ball attain after the first bounce. b) how much kinetic energy is lost duirng the impact if ...
Monday, February 21, 2011 at 7:25am by robert

physics
A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 5.39 m/s, at an angle of 26.0 with respect to the original line of motion (a) Find the velocity (magnitude and direction) of the second ball after collision
Wednesday, October 19, 2011 at 4:30pm by Anonymous

physics
A rubber ball (mass 0.21 kg) is dropped from a height of 1.7 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? Magnitude? Direction? (b) If the ...
Sunday, December 4, 2011 at 7:07pm by glenmore

Science Physics
A rubber ball of mass m1= 10kg is moving to the right with speed v1= 10m/s. it collides elastically with another ball of mass m2= 50kg, which is sitting at rest. m2 is larger than m1, what are the speeds of the balls, v1 and v2 after the collision?
Thursday, February 3, 2011 at 9:29pm by Alan

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