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.
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.
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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. How does the
speed of the sled at the bottom of the second hill (after it has
slid down) compare to that of the sled at the bottom of the
original hill?
The speed at the bottom is greater for the higher but less steep
hill than for the original.
The speed at the bottom is the same for both hills.
O The speed at the bottom is greater for the original hill.
There is not enough information given to say which speed at the
bottom is faster.
None of these descriptions is correct.
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