Question

Why does a passenger fall forward or backward in his seat, when the vehicle suddenly stop or starts?

Answer 1

due to inertia! it says when a body is in rest it must be at rest but when a body is in motion must be in motion until and unless any external force is applied

Answer 2

The passengers in a bus tend to fall backward when it starts suddenly due to inertia as the passengers tend to remain in the state of rest while the bus starts to move.

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