Question

A rolling rock of mass 150 kg, moving with 10 m/s has hit another rock of mass 100 kg

which is at rest. After the collision both the rocks started to move together. What is the

velocity of the combined mass?​

Answer 1

Answer:

As long as no external forces are acting on the objects involved, the total momentum stays the same in explosions and collisions. We say that momentum is conserved. You can use this idea to work out the mass , velocity or momentum of an object in an explosion or collision.

Answer 2

check from ur book and copy the formula