Question

A balloon is raising up along the axis of a concave mirror of radius 30m. A ball is dropped from the balloon at a height 5 m from the mirror when the balloon has velocity 20ms-1. The speed of the image of the ball formed by concave mirror after 4 seconds is 5p in ms-1, the value of p is (g= 10 ms-2)

Answer 1

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Answer 2

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The answer is 0

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