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Question

For the equation s=10t+4t2, what is the acceleration of the body? Assume that the body has a constant acceleration.


  1. 6 m/s2

  2. 8 m/s2

  3. 4 m/s2

  4. 2 m/s2


Solution

The correct option is B

8 m/s2


Given equation is s=10t+4t2

s=10t+12×8t2

Comparing with the second equation of motion, s=ut+12at2, we get a=8 m/s2.

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