ds The accompanying figure shows the velocity v = - dt = f(t) The body reverses direction at t = (Use a comma to separate answers as needed.) (m / sec) of a body moving along a coordinate line. a. When does the body reverse direction? The body moves at a constant speed at 3 sts 6 b. When is it moving at a constant speed? c. Graph the body's speed for Ost = 10. Choose the correct graph of the body's speed for d. Graph the acceleration, where defined. Ost= 10. Av (m/sec) O A. O B. 5- v = f(t ) Alvl (m/sec) Alvl (m/sec) + 5- 5- (sec) t O c. O D. Alvl (m/sec) Alvl (m/sec) 5- 5