A 32-kg girl stands on a 7-kg wagon holding two 13.5-kg weights. She throws the weights horizontally off the back of the wagon at a speed of 9.0 m/s relative to herself. A) Assuming that the wagon was at rest initially, what is the speed of the girl after she throws both weights at the same time? B) Assuming that the wagon was at rest initially, what is the speed with which the girl will move after she throws the weights one at a time, each with a speed of 9.0 m/s relative to herself?
A 32-kg girl stands on a 7-kg wagon holding two 13.5-kg weights. She throws the weights horizontally off the back of the wagon at a speed of 9.0 m/s relative to herself. A) Assuming that the wagon was at rest initially, what is the speed of the girl after she throws both weights at the same time? B) Assuming that the wagon was at rest initially, what is the speed with which the girl will move after she throws the weights one at a time, each with a speed of 9.0 m/s relative to herself?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
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A 32-kg girl stands on a 7-kg wagon holding two 13.5-kg weights. She throws the weights horizontally off the back of the wagon at a speed of 9.0 m/s relative to herself.
A) Assuming that the wagon was at rest initially, what is the speed of the girl after she throws both weights at the same time?
B) Assuming that the wagon was at rest initially, what is the speed with which the girl will move after she throws the weights one at a time, each with a speed of 9.0 m/s relative to herself?
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