Question:
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goal keeper to
(a) exert larger force on the ball
(b) reduce the force exerted by the ball on hands
(c) increase the rate of change of momentum
(d) decrease the rate of change of momentum.
Solution:
(b) Explanation:
$\mathrm{F}=\frac{\text { change in momentum }}{\text { time }}$