The Velocity Of A Body Varies As, V = 2t+5t^2. What Is The Acceleration At T = 10?

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Editor Staff asked 1 year ago

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) 50

I 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
Select the correct answer from above options
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Question Tags: physics–class 11 oscillations simple-harmonic-motion

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Editor Staff answered 1 year ago

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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