*31.  At the local swimming hole, a favorite trick is to run horizontally off a cliff that is

8.3 m above the water. One diver runs off the edge of the cliff, tucks into a “ball,” and rotates on the way down with an average angular speed of 1.6 rev/s. Ignore air resistance and determine the number of revolutions she makes while on the way down.

 

So we need time to fall 8.3 m, use vertical kinematics.

 

Solving for t

 

 

 

 

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This page last updated on January 11, 2020