old problem

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can you send me the answers again to the chemistry problems that started with:


 [ .1] imagine a book that is falling from a shelf.  at a particular moment during its fall, the book has a kinetic energy of 24 j and a potential energy with respect to the floor of 47 j.  

a) how do the bokk’s kinetic energy and its potential energy change as it continues to fall?

b) what was the initial potential energy of the book, and what is its total kinetic energy at the instant just before it strikes the floor?

c) if a heavier book fell from the same shelf, would it have the same kinetic energy when it strikes the floor?
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