Question

A person standing in a bus falls backwards when bus at rest starts moving suddenly. Explain

Answer 1

Hi friend here is your answer.

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It happens because of inertia.

A person standing in a bus , will resist its motion. Means his body want to be in rest but because of sudden motion , a force named pseudo force will act on the person from front, so the person falls backward.

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Answer 2

This happens because the person and the bus both are in rest while the person is not moving as the bus start moving . The leg of the person start moving along with bus but rest portion of his body has tendency to remain in rest. Because of this , person falls backward if he is not alert.