A cyclist rides uniformly around a circular track of radius and takes to reach the…

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

A cyclist rides uniformly around a circular track of radius 5 m5\,\text{m} and takes 4 s4\,\text{s} to reach the point diametrically opposite the start. Which option shows the correct pair of values for (i) the speed during the motion and (ii) the magnitude of the average velocity for this 4 s4\,\text{s} interval? (a) 3.9 m/s; 3.9 m/s3.9\,\text{m/s};\,3.9\,\text{m/s} (b) 7.9 m/s; 2.5 m/s7.9\,\text{m/s};\,2.5\,\text{m/s} (c) 3.9 m/s; 2.5 m/s3.9\,\text{m/s};\,2.5\,\text{m/s} (d) 3.9 m/s; 1.3 m/s3.9\,\text{m/s};\,1.3\,\text{m/s}

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