A boy travelling in an open car moving on a levelled road with constant speed tosses a ball vertically up in the air and catches it back. Sketch the motion of the ball as observed by a boy standing on the footpath. Give explanation to support your diagram.

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The path of the ball is parabolic. Ball and car travels equal horizontal distance because both cars have same speed. Due to its vertical speed, the ball follows a parabolic path.

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