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1. A 40.0-kg girl stands on a 15.0-kg wagon holding two 19.5-kg weights. She throws the...

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Physics

1. A 40.0-kg girl stands on a 15.0-kg wagonholding two 19.5-kg weights. She throws the weightshorizontally off the back of the wagon at a speed of 5.0m/s relative to herself .

A. Assuming that the wagon was at rest initially, what is thespeed of the girl relative to the ground after she throws bothweights at the same time?

B. Assuming that the wagon was at rest initially, what is thespeed relative to the ground with which the girl will move aftershe throws the weights one at a time, each with a speed of 5.0m/s relative to herself?

2. A 740.0 N man, carrying a 1.7 kg physics textbook, stands atthe center of a frozen pond of radius 5.0 m. He is unable to get tothe other side since there is no friction at all between his shoesand the ice. To overcome his difficulty, he throws his textbookhorizontally at a speed of 7.0 m/s toward the north shore. How long(in s) does it take him to reach the south shore?

Answer & Explanation Solved by verified expert
4.4 Ratings (595 Votes)
Mass of girl Mg 40 kg mass of wagon Mw 15 kg mass of    See Answer
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