# 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.

1. 👍 0
2. 👎 0
3. 👁 104
1. First, use conservation of momentum to find the velocity of ball A AFTER the collision, Va2.
10kg*10m/s = 5kg*10m/s + 10kg*Va2
Va2 = 50/10 = 5 m/s

Then, compare the sum of kinetic energies before and after collision.

before: KEtotal = (1/2)*10*10^2 = 500 J
after: KEtotal = KE(A) + KE(B) = ___
If the total KE decreases, the collsion is ineleastic. Do the numbers and find out if it is.

1. 👍 0
2. 👎 0
posted by drwls
2. retetetgrhehhe

1. 👍 0
2. 👎 0
posted by e2tgweg

## Similar Questions

1. ### 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

asked by anonymous on February 13, 2014
2. ### 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

asked by Toni on February 8, 2012
3. ### 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

asked by Alan on February 3, 2011
4. ### Science

Ball B, with a mass of 30kg, is moving to the left at 10 m/s. With what velocity should Ball A, with a mass of 10kg, move to the right and collide with 2, so that ball A rebounds with a velocity of 30 m/s, and Ball B with velocity

asked by D on February 28, 2018
5. ### PHYSICS

At what height above the ground must a body of mass 10kg be situated inorder to have potential energy equal in value to the kinetic energy possessed by another body of mass 10kg moving with a velocity of 10m/s?

asked by Anonymous on January 30, 2016
6. ### PHYSICS

AT WHAT HIGHT ABOVE THE GROUND MUST A BODY OF MASS 10KG IS SITUATED IN OTHER TO HAVE POTENTIAL ENERGY EQUAL IN VALUE TO THE KINETIC ENERGY POSSED BY ANOTHER BODY OF MASS 10KG MOVING WITH A VELOCITY OF 10M/S

asked by ALLI on January 30, 2019
7. ### PHYSICS

AT WHAT HIGHT ABOVE THE GROUND MUST A BODY OF MASS 10KG IS SITUATED IN OTHER TO HAVE POTENTIAL ENERGY EQUAL IN VALUE TO THE KINETIC ENERGY POSSESSED BY ANOTHER BODY OF MASS 10KG MOVING WITH A VELOCITY OF 10M/S

asked by ALLI on January 30, 2019
8. ### physics

At what height above the ground must a body of mass 10kg be situated in order to have potential energy in value to the kinetic energy possessed by another body of mass 10kg moving with a velocity of 10m-s

asked by sarah on May 25, 2015
9. ### Physics

The mass of ball A is 10kg and the mass of ball B is 5kg. If the initial velocity is set to 3 meters per sec for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the

asked by Anonymous on January 21, 2018
10. ### Physical science b

The mass of ball A is 10kg and the mass of ball B is 5kg. If the initial velocity is set to 3 meters per sec for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the

asked by Anonymous on January 21, 2018

More Similar Questions