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Force and Laws of Motion — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceForce and Laws of Motion2 Marks
Question
Explain why, a runner presses the ground with his feet before he starts his run.
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Answer

To start his run, a runner bends forward and pushes the ground with his feet in the backward direction. In turn ground exerts a reaction force on the runner in the forward direction which makes him run.

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