posted by royaa .
A horse canters away from its trainer in a straight line, moving 130 m away in 13.0 s. It then turns abruptly and gallops halfway back in 5.4 s.
a) Calculate its average speed.
(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.
avg speed=distance/time=(130+130)/18.4 sec
avg velocity=0 entire trip