Posted by **Megan** on Sunday, January 30, 2011 at 8:22pm.

A horse canters away from its trainer in a straight line, moving 160 m away in 12.0 s. It then turns abruptly and gallops halfway back in 4.5 s.

(a) Calculate its average speed.m/s

(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction. m/s

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