Question

A player catches a ball of $200g$ moving with a speed of $20m/s$. If the time taken to complete the catch is $0.5$ sec, the force exerted on the players hand is

• A. $8N$
• B. $4N$
• C. $2N$
• D. $0N$

Answer 1

The correct option is A $8N$

$\because \overrightarrow{F}=\frac{\overrightarrow{△P}}{\overrightarrow{△t}}Therefore\overrightarrow{△P}=\overrightarrow{P_f}-\overrightarrow{P_i}\overrightarrow{P_f}=0\overrightarrow{P_i}=200\times {10}^{-3}\times 20=4\overrightarrow{F}=\frac{4}{0.5}=8N$