(Answered) Question suppose there is a hole in the table and the ball

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Question: Suppose there is a hole in the table and the ball falls through it. What will be the ball's gravitational potential energy when it is 20cm below the table? What will be its kinetic energy at this point? What will be the sum of its kinetic and potential energy? This exercise makes the important point that although kinetic energy is always positive, potential energy can be negative.

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