Give scientific reasons.

It is easier to stop a tennis ball as compared to a cricket ball, when both are travelling with the same velocity.

Cricket ball is heavier than the tennis ball. Hence, the force required to stop a cricket ball is more as compared to tennis ball with the same velocity.

As we know, Force = Mass × acceleration

Here, force is directly proportional to mass.

So even if the velocity is same, the mass of leather ball is greater than that of tennis ball and the momentum (which is mass multiplied by velocity) and hence has more momentum and it is not easier to stop cricket ball.