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The velocity of a ship varies with time as v = 5t^3. What is the acceleration at t = 2?(a) 60(b) 56(c) 40(d) 100The question was posed to me in a job interview.I'm obligated to ask this question of Motion in a Straight Line in portion Motion in a Straight Line of Physics – Class 11

Answer»

Correct answer is (a) 60

Best EXPLANATION: Acceleration of a body can be found out by differentiating the expression for VELOCITY. Here V = 5t^3. On differentiating, a = dv/dt = 15t^2. On putting t = 2, we get a = 60 UNITS.



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