The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = - t3 + 7t2 - 7t, 0 ? t ? 7Find the body's displacement and average velocity for the given time interval.
A. 49 m, 7 m/sec
B. -49 m, -14 m/sec
C. -49 m, -7 m/sec
D. 637 m, 91 m/sec
Answer: C
Mathematics
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