Question

A player caught a cricket ball of mass $150g$ moving with $20{ms}^{-1}$. If the catching process is complete in $0.1sec$

• A. Force exerted by the ball on the hand of player is $30N$
• B. Force exerted by the ball on the hand of players is $40N$
• C. Impulse of the ball is $3N-S$
• D. Force exerted by the ball on the hand of players is $50N$

Answer 1

Answer: (A), (C)

The correct options are
A Force exerted by the ball on the hand of player is $30N$
C Impulse of the ball is $3N-S$

Given that,

Mass of ball, $m=150g=0.15Kg$

Velocity, $v=20m/s$

Time, $t=0.1\sec$

Momentum, $p=mv$

Force,

$F=\frac{momentum}{time}$

$F=\frac{mv}{t}$

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

$F=30N$

So, the force exerted be the ball is $30N$.

Impulse,

$J=force\times time$

$J=30\times 0.1$

$J=3Ns$