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14 August, 07:35

Given s (t) equals 3 t squared plus 6 ts (t) = 3t2+6t , where s (t) is in feet and t is in seconds, find each of the following. a) v (t) b) a (t) c) The velocity and acceleration when tequals=22 sec

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  1. 14 August, 07:58
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    The correct question is:

    Given s (t) = 3t² + 6t , where s (t) is in feet and t is in seconds, find each of the following.

    a) v (t)

    b) a (t)

    c) The velocity and acceleration when t = 22 sec

    Solution:

    Given s (t) = 3t² + 6t

    (a) The velocity, v (t) is the derivative of s (t). That is v (t) = s' (t)

    s' (t) = v (t) = 6t + 6

    (b) The acceleration, a (t) is the derivative of v (t). That is a (t) = v' (t)

    v' (t) = a (t) = 6

    (c) When t = 22 sec,

    v (t) = v (22) = 6 (22) + 6 = 132 + 6

    = 138

    a (t) = a (22) = 6

    At t = 22, the velocity is 138, and acceleration is 6.
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