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Describe the types of energy and the percentage of each type of energy present when a...

Describe the types of energy and the percentage of each type of energy present when a book is falling from a shelf. Include four points in time in your answer:

1) The book is at rest on the shelf.

2) The book is falling and is half way between the shelf the and ground.

3) The book is falling and just about to hit the ground.

4) The book is at rest on the ground. Please take the ground as the zero potential energy position. Ignore air resistance.

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