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Home Q & A Board Science-Related Homework Help Physics
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Peach Peach
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11 years ago
From point A to B on the rough surface, the cyclist lost 2000J of energy due to the frictional force of the rough surface of the 10 m road. She started with an initial speed vA at point A, arriving at point B with a speed of vB. The cyclist barely made it to the flat part (point C) of the frictionless surface without pedaling.

 

If the weight of the bike and the cyclist is 980N, and point C is located at h = 0.5 m above the ground, find:
a.   The speed of cyclist at point B, vB
b.   The speed of cyclist at point A, vA
c.   The coefficient of kinetic friction, µk , between the bike tires and the road.

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AlexxAlexx
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11 years ago
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Educator
11 years ago
Excellent response.
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