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Draw a free-body diagram of Usain during the race, and justify why you think each force you listed is acting on him. Are these forces helping Usain, hindering Usain, or having no effect on his race?

1 Answer

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Explanation:

look at the free body diagram

As we can see from the free body diagram

when a runner run two forces act on him.

gravity force which is acting downward and a reaction force by the ground which can be resolved into two components Fx and Fy.

Fx act in the forward direction to push runner to move in forward direction while Fy provide a upward force to the runner.

These two forces help a runner to run.

Draw a free-body diagram of Usain during the race, and justify why you think each-example-1
User Jiayu Wang
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