Question

When a train starts, the head of a standing passenger seems to be pushed backward. Analyse the situation from the ground frame. Does it really go backward? Coming back to the train frame, how do you explain the backward movement of the head on the basis of Newton's laws?

Answer 1

No, it does not go backward. The backward movement of the head on the basis of Newton's laws is explained below

Explanation:

• It seems to go backward but with respect to the ground frame, it does not go backward.
• According to the first law of Newton, a body resists any change  (First law)

• When the train starts moving the frame of the train, and the passenger’s feet starts moving but the head of the passenger which was in rest, tries to be so.
• As a result, the head of the passenger seems to be pushed backward.  

Answer 2

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No, it does not go backward. The backward movement of the head on the basis of Newton's laws.

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