Question

a .50 kg ball traveling at 6.0 m/s collides head on with a 1.0 kg ball moving in the opposite direction at a velocity of -12.0 m/s. The .50 kg ball moves away at -14 m/s after the collision. Find the velocity of the second ball.

Answer 1

conservation of momentum:

.5*6+1*(-12)=.5(-14)+1*V

solve for V

Answer 2

-2m/s