A sprinter accelerates from rest. Is the work done on the sprinter positive, negative, or zero? Explain
Work done on sprinter is negative.
A sprinter accelerates from rest.
When sprinter accelerates, the work done on sprinters is due to normal reaction on sprinter.
As the sprinter takes off from ground, work done is calculated by the frictional force acting on when sprinter takes off foot from ground.So ,the normal reaction on the sprinter is negative giving negative work done on the sprinter.
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