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2nd Equation of Motion

A bird flies ...

Question

A bird flies for 4 s with a velocity of $| t - 2 | m / s$ in a straight line, where t = time in second. Find the distance it covers in metres.___

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Solution

Distance travelled $= \int_{0}^{2} (2 - t) d t + \int_{2}^{4} (t - 2) d t = 4 m$

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