A ball is released from rest from the twentieth floor of a building. After 1 s, the ball has fallen one floor such that it is directly outside the nineteenth-floor window. The floors are evenly spaced. Assume air resistance is negligible. What is the number of floors the ball would fall in 3 s after it is released from the twentieth floor?

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Q: Problems, Section 9 number,10,11. Please answer the questions

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Q: the normal force that you experience

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