Question

A goalkeeper in a game of football pulls his hand backward 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 balls on hand
• C. Increase the rate of change of momentum
• D. Increase the total change in momentum

Answer 1

The correct option is B

Reduce the force exerted by the balls on hand

1. A large force that acts in a very short duration of time is referred to as an impulsive force.
2. After holding the ball, the goalkeeper pulls his hands backward to slow down the rate of change of momentum while increasing the time.
3. Because force is directly related to the rate of change of momentum, this allows less force to be exerted on his hands.
4. Hence, the correct answer is option B.