A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of friction between his sho

cistG 2021-01-10 Answered
A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward the north shore , at a speed of 5.0 m/s. How long does ittake him to reach the south shore?
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Expert Answer

SabadisO
Answered 2021-01-11 Author has 108 answers

Conservation of momentum:
Momentum right before the book is thrown = Momentum right after the book is thrown
(730N+(1.29.8)N)0 ms=730v+(1.29.8)5.0 ms
v=(1.29.8)5730
=0.0805m/s (negative indicate opposite direction from thebook)
Time taken to reach the south shore = distance/velocity
=5.00.0805
=62.1s

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