The accompanying figure shows the velocity v = ds/dt = f(t) (m/sec) of a body moving along a coordinate line. v (m/sec) v = f(1) (sec) 1 4 6/ 8 10 -3 a. When does the body reverse direction? b. When (approximately) is the body moving at a constant speed? c. Graph the body's speed for 0 si S 10. d. Graph the acceleration, where defined. 3.

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