Question: A particle moves along a straight path with an acceleration of a = (kt+4) ft/s, where t is in seconds. Determine the constant k, knowing

A particle moves along a straight path with an acceleration of a = (kt³+4) ft/s², where t is in seconds. Determine the constant k, knowing that v = 12 ft/s when t = 1 s, and that v=-2 ft/s when t = 2 s.

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