A sled is pulled up to the top of a hill. The sketch above indicates the shape of the hill. At the top of the hill the sled is released from rest and allowed to coast down the hill. At the bottom of the hill the sled has a speed vand a kinetic energy E (the energy due to the sled's motion). Friction and air resistance are so small they can be ignored. The sled is pulled up a second and higher hill that is less steep than the original hill described above. For the second higher hill that is less steep, how does the kinetic energy of the sled at the bottom of the hill after it has slid down compare to that of the original hill? O The kinetic energy of the sled at the bottom is greater for the higher but less steep hill. The kinetic energy of the sled at the bottom is the same for both hills. The kinetic energy at the bottom is greater for the original hill. There is not enough information given to say which kinetic energy is greater. None of these descriptions is correct.

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter10: Work, Energy And Machines
Section: Chapter Questions
Problem 45A
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A sled is pulled up to the top of a hill. The sketch above indicates the
shape of the hill. At the top of the hill the sled is released from rest
and allowed to coast down the hill. At the bottom of the hill the sled
has a speed v and a kinetic energy E (the energy due to the sled's
motion).
Friction and air resistance are so small they can be ignored.
The sled is pulled up a second and higher hill that is less steep than
the original hill described above. For the second higher hill that is
less steep, how does the kinetic energy of the sled at the bottom of
the hill after it has slid down compare to that of the original hill?
The kinetic energy of the sled at the bottom is greater for the higher but
less steep hill.
The kinetic energy of the sled at the bottom is the same for both hills.
The kinetic energy at the bottom is greater for the original hill.
There is not enough information given to say which kinetic energy is
greater.
O None of these descriptions is correct.
Transcribed Image Text:A sled is pulled up to the top of a hill. The sketch above indicates the shape of the hill. At the top of the hill the sled is released from rest and allowed to coast down the hill. At the bottom of the hill the sled has a speed v and a kinetic energy E (the energy due to the sled's motion). Friction and air resistance are so small they can be ignored. The sled is pulled up a second and higher hill that is less steep than the original hill described above. For the second higher hill that is less steep, how does the kinetic energy of the sled at the bottom of the hill after it has slid down compare to that of the original hill? The kinetic energy of the sled at the bottom is greater for the higher but less steep hill. The kinetic energy of the sled at the bottom is the same for both hills. The kinetic energy at the bottom is greater for the original hill. There is not enough information given to say which kinetic energy is greater. O None of these descriptions is correct.
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