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Question

When an athlete takes part in a long jump he runs for a while and then jumps. This is because:


A
inertia of motion helps him to take a longer jump.
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B
running for a time makes him alert.
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C
it helps him to focus on the point of jump.
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D
he can apply more force for the jump after running.
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Solution

The correct option is A inertia of motion helps him to take a longer jump.
The inertia helps him to retain his horizontal speed and hence the athlete can jump with a greater horizontal velocity to cover a longer distance.

Physics

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