Posted by **Anonymous** on Saturday, November 20, 2010 at 7:46am.

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.

- physics -
**drwls**, Saturday, November 20, 2010 at 8:16am
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.

- physics -
**e2tgweg**, Monday, October 13, 2014 at 1:46pm
retetetgrhehhe

## Answer This Question

## Related Questions

- physics - Ball 2, with a mass of 30kg, is moving to the left at 10m/s. With what...
- physical science - 19. (2 points) Ball 2, with a mass of 30kg, is moving to the ...
- Science Physics - A rubber ball of mass m1= 10kg is moving to the right with ...
- physics - A stationary billiard ball, mass 0.17 kg, is struck by an identical ...
- PHYSICS - 1....How much force needed to bring a 3200 lb car from rest to a ...
- Ap Physics - Ball A,with a mass of 1.75kg,moves with a velocity of 3.50 m/s. It ...
- Physics - A ball is moving at 82 m/s when it hits a ball at rest which has a ...
- physics - A 3.35 kg ball moving at 4.20 m/s to the right hits a 2.45 kg ball ...
- Physics - 1. A stationary curling stone is struck in a glancing collision by a ...
- PHYSICS (most is worked) - A glass ball, ball A, of mass 6.0 g moves at a ...

More Related Questions