a goalkeeper in game of football pulls his hands backward after holding the ball shot at the goal. this enables the goalkeeper to
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A goalkeeper pulls his hands backwards while holding the ball shot at the goal to decrease the rate of change of momentum of ball and hence reduse the force exerted by the ball on the hands.
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In a match goalkeeper pulls his hands backwards after holding the ball. This he does in order to reduce the force that ball exerts on his hand
We know that
Force is directly proportional to rate of change of momentum .
That means force = change in momentum/time
So here the goal kepper increases the time. This decreases the momentum and henceforth decreases the force so that the goal keeper does not get hurt or pain.
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