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Instantaneous acceleration
Question

 A particle is moving along a straight line and its velocity at time t is given by v = 2t m/s. If its instantaneous acceleration at t = 2 sec is ‘a’ and average acceleration in the interval t = 0 to t = 4 sec is b , then

Easy
Solution

Instantaneous acceleration  a = dvdt = 2 m/s2

 Since instantaneous acceleration is constant , average acceleration = 2 m/s2

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