Physics, 02.09.2021 01:00, zoriahmendoza

While riding on an elevator descending with a constant speed of 3.0 m/s, you accidentally drop a book from under your arm
How long does it take for the book to reach the elevator floor, 12 m below your arm? (0.49s)
What is the book's speed relative to you when it hits the elevator floor? (4.8m/s)
In parentheses are the answers. I just can't figure out the work. Anyone wanna help?

Answers: 2

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While riding on an elevator descending with a constant speed of 3.0 m/s, you accidentally drop a boo...