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A man getting down from a running bus falls forward:

1. as the forward movement of bus tries to pull the man forward
2. due to inertia of upper part of the body moves in the forward direction while feet come to the rest as soon as they touch the road
3. as he leans forward as a matter of habit
4. due to the combination effect of all the three factors stated in \( (A),(B) \) and \( (C) \)

Correct answer: due to inertia of upper part of the body moves in the forward direction while feet come to the rest as soon as they touch the road

Solution

When the feet touch the ground, they are brought to rest quickly by friction, but the upper body still has the bus’s forward velocity. Because of inertia, the upper part keeps moving forward, making the person fall forward. This is not because the bus “pulls” him, but because different parts of the body stop at different times.

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