Question: While riding on an elevator descending with a constant speed of 3.0 m / s, you accidentally drop a book from under your arm. (a)

While riding on an elevator descending with a constant speed of 3.0 m / s, you accidentally drop a book from under your arm.

(a) How much time does it take for the book to reach the elevator floor, 1.2 m below your arm?

(b) What is the book's speed relative to you when it hits the elevator floor?

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