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A and B are two trains moving parallel t...

`A` and `B` are two trains moving parallel to each other. If a balls is thrown vertically up from the train `A`, the path of the ball is

A

parabola for an observer standing on the ground

B

vertical straight line for an observer in `B` when `B` is moving with same speed but in same direction

C

a parabola for an observer in `B` when `B` is moving with same speed but in opposite direction.

D

all the above are true

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Verified by Experts

The correct Answer is:
D
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