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JEE Main Physics question

PhysicsMotion in a PlaneJEE Main

A boy playing on the roof of a m high building throws a ball with a speed of m/s at an angle of with the horizontal. How far from the throwing point will the ball be when it is at a height of m from the ground (i.e. back at the level of the roof)? (, , )

Answer: (D)

Solution

Since the ball returns to launch height, the time elapsed is the full time of flight:

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Question ID VK-157654