URGENT!!!!
Q.1) Multiple Choice Questions :
1) A goalkeeper in a game of football pulls his hands backwards after holding the ball
shot at the goal. This enables the goalkeeper to:
(a) Exert large force on the ball
(b) Increases the force exerted by the ball on hands
(c) Increase the rate of change of momentum
(d) Decrease the rate of change of momentum
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Answer:
A large force that acts in a very short duration of time is referred to as impulsive force. This force which is large due to a high speed such as a kick of a football may be disastrous as the momentum change is large and hence a goalkeeper holds his hand backwards in order to reduce the force exerted on his hands.
Answer:
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