Thank you for reporting, we will resolve it shortly
Q.
If a player catches a ball of mass $200\, g$ moving with the velocity $40 \,ms ^{-1}$, then he experiences a force of (time taken to catch the ball is $0.1 \,s$ )
Mass of the ball $m=200\, g =0.2\, kg$
Velocity of the ball $v=40 \,ms ^{-1}$
Time taken to complete the catch
$t=0.1\, s$
From the Newton's second law of motion
$F =m a=\frac{m v}{t} $
$=\frac{0.2 \times 40}{0.1}=80 \,N$