Question

If the man travelling in a bus the sudden stop of the bus make him fall forward why

Answer 1

This is because of the motion. When the man was travelling in the bus then his whole body was in motion but when the bus suddenly stopped then his lower part of body was in contact to the bus floor but the upper part ( thoracic cavity ) was not in contact of bus . When bus was stop then his lower part of the body was stop but upper part of body was continue in motion that's he was fall forward

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. When the bus stops suddenly, people fall forward because their inertia as they are in state of motion even when the bus has come to rest.

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