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A cyclist moving on a circular track of radius40 m completes half a revolution in 40 s. Itsaverage velocity is(a) zero (b) 4 n ms (c)2 ms? (d) 8 T ms- |
Answer»
=> radius of circular track = 40m => time = 40 s
=> Average velocity after half revolution
=> Displacement after half revolution = 2r => Average velocity = d/t
=> Vav = d/t = 2r/t = 2×40/40 = 2 m/s
=> Average velocity = 2 m/s |
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