Question

Explain the following briefly:
(a) A cricket ball causes much severe injury than a tennis ball on hitting a spectator.
(b) An applied unbalanced force causes a change in momentum.
(c) A greater force is required to impart greater velocity to an object.

Answer 1

Ans(a) - Cricket ball has more mass as compared to the tennis ball. That's why it have more inertia. And it causes much severe injury.