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The cyclist goes around a circular tracks onces every 2 minutes. If the radius of the circular tracks is 105m, then his speed is |
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Answer» :Time taken by cyclist to complete a round = 2 minRadius of circular path = 105 mWe have to find speed of cyclist★ Speed is DEFINED as the ratio of total distance travelled to the total time taken.It is a scalar quantity having only magnitude.It can't be negative or zero.SI unit : m/sAfter completing ONE round of circular path, distance covered by cyclist will be equal to the perimeter of circle.Distance travelled :➝ d = 2πr➝ d = 2 × 3.14 × 105➝ d = 659.4 mSpeed of cyclist :➝ V = d / t➝ v = 659.4 m / 2 min➝ v = 659.4/120 m/s➝ v = 5.5 m/s |
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