Question: A cyclist starts from rest and coasts down a 4.0 hill. The mass of the cyclist plus bicycle is 85 kg. After the cyclist has

A cyclist starts from rest and coasts down a 4.0° hill. The mass of the cyclist plus bicycle is 85 kg. After the cyclist has traveled 180 m,

(a) What was the net work done by gravity on the cyclist?

(b) How fast is the cyclist going? Ignore air resistance and friction.

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