# physics

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A toy train is on a track which has a circumference of 10 meters. The train takes 20 seconds to complete one revolution around the
track.what is it's average speed? average velocity?

• physics -

r = d/t = 10 m / 20 s = 0.5 m/s.

V = 1 rev / 20 s = .05 rev/s = 0.314 rad/s.

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