okay i applied work and conservation of energy to this problem, but the solution doenst come out right!(adsbygoogle = window.adsbygoogle || []).push({});

Suppose the roller coaster in the figure below passes point A with a speed of 1.76 m/s

If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 45.8 m and h = 29.4 m.

1/2mvi^2 + mgh - 1/5md = 1/2mvf^2

the m's cancel out and u should be able to solve for Vf, but it doest come out right!

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# Homework Help: Work and conservation of energy

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