InterviewSolution
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oving on a circular road of radius r 150 m and its speed is increasing at a r92 Ainstant its speed is 30 m/s, net acceleration of the car at this instant is(1) 8 m/s2(3) 10 m/s2rate 8 mis?.(2) 6 m/s2(4) 14 m/s? |
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Answer» = Radius of circular path = 150 m= Perimeter or length of path = 2 Pi r = 2 * 22 / 7 * 150 = 942.85 m. = v = u + a t = 30 = 0 + 8 * t = t = 3.75 s. S = u t + 1 /2 a t^2 942.85 = 0 + 1 / 2 * a * 3.75^2 = 942.85 = 7.03 a = a = 13.4 m/s. Why did you take initial velocity 0? It is not stated and we can't assume that... |
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