Explain why passengers are thrown forward from their seats when a speeding bus stops suddenly.

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Solution

Apply law of inertia.
Whenever a fast-moving bus stop suddenly, the lower portion of a passenger’s body, which is in contact with the seat, suddenly comes to rest but the upper portion of the passenger’s body tends to remain in motion due to inertia (first law).
As a result, the passenger’s upper body is thrown forward in the direction in which the bus was moving.

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Give reasons:

A)When a bus takes a U-turn,passengers sitting inside are thrown a side.

B)It is easier to stop a tennis ball than a cricket ball moving with the samespeed.

C)A passenger jumping out of a rapidly moving bus falls forward with his face downwards.

D)A person sitting in bus falls forward when moving bus suddenly stops and people sitting in bus fall backward when bus suddenly starts.

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