A 000500 kg ball is moving downward at 100 ms It undergoes a

A 0.00500 kg ball is moving downward at 1.00 m/s. It undergoes an elastic collision with a heavy horizontal plate, which is fixed to the earth. The changein momentum of the ball due to this collision is 5.00 times 10^-2 kg m/s, down Zero 1.00 times 10^-2 kg m/s, Up 1.00 times 10^-2 kg m/s, down 5.00 times 10^-2 kg m/s, up

Solution

Since the plate is heavy horizontal so the ball would rebound with same velocity upwards.

So change in momentum would be 2*m*v = 2*.00500*1 = .01 = 1* 10^-2 kg m/s . upwards