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Question

In a long jump athletic event, the athletes are allowed to fall either on a sand bed or cushioned bed to ______ the impact force by ______ the time to stop.

A
increase, decreasing
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B
decrease, increasing
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C
increase, increasing
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D
decrease, decreasing
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Solution

The correct option is B decrease, increasing
In a long jump athletic event, the athletes are made to fall either on a cushioned bed or sand bed. This is to increase the time of the athlete's fall to stop after making the jump.
According to the second law of motion,
Force=Δ pΔ t
This decreases the rate of change of momentum and hence, the force is decreased. As a result, the athlete does not get injured.

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