Question

A ball of mass 0.5 kg has 100 J of kinetic energy. What is the velocity of the ball?​

Answer 1

Explanation:

After reflecting back the change in momentum is nothing but 2×initial momentum =2×0.5Kg×2m/s=2Kgm/s

Average force exerted is

Δt

change in momentum

Given that Δt=0.5s

so by putting above value we get Force=4N✅

Answer 2

Answer:

this may help you

A ball of mass 0.5 kg has 100 J of kinetic energy. What is the velocity of the ball?