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The velocity of a body varies as, v = 2t+5t^2. What is the acceleration at t = 10?(a) 102(b) 100(c) -100(d) 50I had been asked this question during an internship interview.Question is taken from Motion in a Straight Line topic in portion Motion in a Straight Line of Physics – Class 11

Answer»

Right answer is (a) 102

The explanation: ACCELERATION = dv/dt. To find the acceleration, we can DIFFERENTIATE the VELOCITY EQUATION with respect to time. a = 2 + 10t. On putting, t = 10, we get a = 102.



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