15) A man walks on a circular track of radius 10m and complete one round. He covers the first half of the circle in 3 min and next half in 4 min.What will be his average speed and average velocity for entire trip in m/s.
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6.28 62.8 Solution verified Verified by Toppr Correct option is B Velocity 0 , speed 10 m / s Since after each lap the position of the car is same as initial so the average velocity will be zero . Total Distance = 2 + ² = 2 × 3.14 × 10 = 62.8 m Total time = 6.28 s Average speed = t d = 10 m / s
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