A particle P travels with constant speed in a circle of radius 7.4 m and completes one revolution in 22.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 4.4 s and t = 18.7 s.(adsbygoogle = window.adsbygoogle || []).push({});

I used T=2(pi)r / v

22 = 2*pi*7.4/v

v = 2.11 m/s

But the answer was rejected... The velocity in a circle is supposed to be constant, why won't my answer work?

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# Homework Help: Problem with average velocity in a circle

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