Question

a goalkeeper in a game of football pulls his hand backwards after holding the ball shot at the goal his enables the goalkeeper to

a) Exert large force on the ball
b) Increase the force exerted by the ball
on hands
c) Increase the rate of change of momentum
d) decrease the rate of change of momentum ​

Answer 1

Answer:

d) decrease the rate of change of momentum

Explanation:

Answer 2

Answer:

To decrease the value of the rate of change of momentum, a goalkeeper pulls his hand backward. Option d) is correct.

Explanation:

• In a small-time duration, when a large force is exerted then this force is called an impulse.
• The change in the momentum of an object gives the impulse exerted on the object.

When a kick is applied to a football, the force that acts is very large due to the high speed of football. This is because the impulse that acts on the goalkeeper is very high due to the large change in the momentum of the football.

So, a goalkeeper in a game of football pulls his hand backward to decrease the rate of change of momentum.

Option d) is correct.