1.

A train carriage moves along the x-axis with a uniform acceleration veca. An observer A in the train sets a ball in motion on the frictionless floor of the carriage with a velocity vecu relative to the carriage. The direction of vecu makes an angle with the x-axis. Let B be an observer standing on the ground outside the train. The subsequent path of the ball will be

Answer»

A straight LINE with respect to OBSERVER A
Parabolic with respect to observer A
A straight line with respect to observer B
None of the above

Answer :A


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