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A(n) 858 N man stands in the middle of a frozen pond of radius 5.97 m. He is unable to get to the other side?

"A(n) 858 N man stands in the middle of a

frozen pond of radius 5.97 m. He is un-

able 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

1.26 kg physics textbook horizontally toward

the north shore, at a speed of 5.75 m/s.

How long does it take him to reach the

south shore?"

Answers (6)

nazi 05-03-2013
"What happens is the momentum of the book is equal to his momentum except they are in exactly opposite directions so they exactly cancel. This confirms the law of conservation of momentum. The momentum before the book was thrown was zero and the momentum after the book was thrown is zero. The mass of the man is 858/9.81 = 87.5kg The momentum of the book is 1.26*5.75 = 7.245kgm/s 87.5*V=7.245 where V is the man's velocity after the book is thrown. V = 7.245/87.5 = 0.083m/s He has to slide 5.97m V = d/t => t = d/V = 5.97/0.083 = 72.1s
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dharmendrae 15-05-2013
"The survey exhibits some sort of cellular throughout balance. Every one of the supports is actually zero.of sixteen m extended, with each dangles coming from a promoting string that may be committed fraction of how around this. This size of each and every fly fishing rod is definitely zero.x kilogram. The bulk of the guitar strings linking the actual obstructs on the a fishing rod can be minimal. Just what ... "
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