## Tangential Velocity

**To throw the discus, the thrower holds it with a fully outstretched arm. Starting from rest, he begins to turn with a constant angular acceleration, releasing the discus after making one complete revolution. The diameer of the circle in which the discus moves is about 1.7m**

**If the thrower takes 1.0s to complete one revolution, starting from rest, what will be the speed of the discus at release?**

1 rev = 6.283 radians

6.283/(1sec/2) = (u + v) = 12.566

u = 0

v = 12.566 rad/s

tangential velocity = rad/s x radius

radius = 1.7/2 = 0.85 m

12.566 x 0.85 = 10.68 m/s

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