Question

A player caught a cricket ball of mass $150$ g moving at a speed of $20$ m/s. If the catching process is completed in $0.1$ s, the force of the blow exerted by the ball on the hand of player is equal to

• A. $3N$
• B. $30N$
• C. $150N$
• D. $300N$

Answer 1

The correct option is B $30N$

It is given that,

Mass of cricket ball, $m=150g=0.15kg$

Initial velocity of the ball, $u=0$

Final velocity of the ball, $v=20m/s$

Time taken in the catching process, $t=0.1s$

$F=ma$

$F=m\times \frac{v-u}{t}$

$F=0.15\times \frac{20-0}{0.1}$

$F=30N$

The force of the blow exerted by the ball on the hand of the player is equal to $30N$.