A rubber ball dropped from a height of 20m falls on the roof of an elevator going up at 2m/s. If the collision of the ball with the elevator is elastic the ball rebounds with A velocity
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if u are asking about the A velocity then it is 2 ms^-1 only . according to newton's 3 rd law
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If the mass of both of them a provided then there can be a different answer but as per given
The answer will be 2 m/s bcoz of the Newton's 3rd law of motion which states that every action has an equal and opposite reaction....
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