Physics for Scientists and Engineers 10th Edition · Linear Momentum and Collisions · Problem 31
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Serway & Jewett — Linear Momentum and Collisions: Problem 31
A 60.0-kg person bends his knees and then jumps straight up. After his feet leave the floor, his motion is unaffected by air resistance and his center of mass rises by a maximum of 15.0 cm. Model the floor as completely solid and motionless. (a) Does the floor impart impulse to the person? (b) Does the floor do work on the person? (c) With what momentum does the person leave the floor? (d) Does it make sense to say that this momentum came from the floor? Explain. (e) With what kinetic energy does the person leave the floor? (f) Does it make sense to say that this energy came from the floor? Explain.
📝 풀이 접근법
주어진 조건: 15.0 cm
구하는 것: (a) Does the floor impart impulse to the person?; (b) Does the floor do work on the person?; (c) With what momentum does the person leave the floor?
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Physics for Scientists and Engineers · 10th Edition
저자: Serway & Jewett
출판사: Cengage
단원: Linear Momentum and Collisions