Posted by **john** on Friday, June 14, 2013 at 10:15am.

You and a friend are going to ride on a Ferris wheel. For a little extra fun, when your friend is at the very top of the Ferris wheel she's going to drop a tennis ball. How far around the Ferris wheel in radians from your friend should you sit so you can catch the ball?

Details and assumptions

>The Ferris wheel radius is R=20 m.

>The Ferris wheel goes around at a constant angular velocity ω=0.2 rad/s.

>The acceleration of gravity is −9.8 m/s2.

>Neglect air resistance.

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