Question

When a light body collides with a massive body at rest ___________

(a) The light body rebounds after the collision

(b) The light body Remains at rest

(c) The massive body rebounds after the collision

(d) No reaction happens

Answer 1

Right choice is (a) The light body rebounds after the collision

The explanation: When a light body collides against a massive body at rest, the light body rebounds after the collision with an equal and opposite velocity while the massive body practically remains at rest. A light ball striking a wall rebounds almost with the same speed and the wall remains at rest.