Answer to Question #69857 in Physics for ekanath sairam yenduri

Question

A 2 kg ball is moving at a speed of 4 m/s toward a ball of the same mass at rest. They both stick together after the collision. What is the velocity of the two ball system and what type of collision is it?

Answer 1

Using the momentum conservation law we obtain
mv+m0=2mx
x=v/2=2 m/s.