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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 8 - Problem 9pe
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 8 - Problem 9pe

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# A person slaps her leg with her hand, bringing her hand to

ISBN: 9780130606204 3

## Solution for problem 9PE Chapter 8

Physics: Principles with Applications | 6th Edition

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Problem 9PE

A person slaps her leg with her hand, bringing her hand to rest in 2.50 milliseconds from an initial speed of 4.00 m/s. (a) What is the average force exerted on the leg, taking the effective mass of the hand and forearm to be 1.50 kg? (b) Would the force be any different if the woman clapped her hands together at the same speed and brought them to rest in the same time? Explain why or why not.

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NEWTON: THE MIND THAT FOUND THE FUTURE ● different laws had to apply on earth and in the heavens ● science begins from theories or hypotheses that you have to prove ● in newton’s time, the gravity was in the apple ● all forces (including gravity) are between two objects, acting equally on both ○ newton’s 3rd law ● the natural path of a speeding object is a straight line, constant speed ○ uniform motion ● newton’s 1st law ● according to Halley, the force of gravity varies inversely with the square of the distance ● newton’s law of universal gravitation = everything attracts everything else ○ force is directly proportional to the two masses ○ force is inversely proportional to the separation of their ce

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