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3 January, 15:55

The speed of an object is given by v = 5.00t^2 + 4.00t where v is in m/s and t is in s. What is the acceleration of the object at t = 2s?

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  1. 3 January, 17:18
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    The speed is

    v = 5t² + 4t

    where

    v is in m/s, and t in s.

    The acceleration is the derivative of the velocity. It is

    a = 10t + 4

    When t = 2 s, the acceleration is

    a (2) = 10*2 + 4 = 24 m/s²

    Answer: 24 m/s²
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