How fast is the cyclist going?

Posted on 2014-05-07 22:36:00 in Physics by

A cyclist starts from rest and coasts down a 3.5? hill. The mass of the cyclist plus bicycle is 90kg . The cyclist has traveled 270m .

1. 
   What was the net work done by gravity on the cyclist?


2. 
   How fast is the cyclist going? Ignore air resistance.

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