A person threw  or projected a stone with some angle with the horizontal from inside the moving train with constant velocity. Describe the motion of that stone  seen by the person.

Ans:- When a person threw or projected a stone with some angle with horizontal from inside the moving train with constant velocity, then the stone adopt the velocity of train as initial velocity. So that velocity of x-component of stone and velocity of train becomes same. Therefore inside the train person can only see the y- components of stone (horizontal height). Therefore the motion seen from inside the train is only in vertical direction of stone, but in fact a stone is acted on parabolic path.

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13.)A person threw or projected a stone with some angle with the horizontal from inside the moving train with constant velocity. Describe the motion of that stone seen by the person.