A cricket ball travelling at is hit back along the same line with a speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

0.15\,\text{kg}

cricket ball travelling at

20\,\text{m s}^{-1}

is hit back along the same line with a speed of

30\,\text{m s}^{-1}

. If the bat is in contact with the ball for

0.010\,\text{s}

, find the magnitude of the average force exerted by the bat on the ball. (a)

1.5\times10^{2}\,\text{N}

(b)

1.5\times10^{3}\,\text{N}

(c)

7.5\times10^{2}\,\text{N}

(d)

4.5\times10^{2}\,\text{N}