A horse canters away from its trainer in a straight line,moving 160m away in 16.

Question

A horse canters away from its trainer in a straight line,moving 160m away in 16.0s. It then turns abruptly and gallopshalfway back in 5.4s.
A)Calculate its average speed in m/s. B) Calculate its average velocity, m/s, for theentire trip, using "away from the trainer" as the positivedirection. A horse canters away from its trainer in a straight line,moving 160m away in 16.0s. It then turns abruptly and gallopshalfway back in 5.4s.
A)Calculate its average speed in m/s. B) Calculate its average velocity, m/s, for theentire trip, using "away from the trainer" as the positivedirection.

Explanation / Answer

(a) average speed is total distance / total time =    240 m / 21.4 s =    11.2m/s . (b) average velocity is total displacement / totaltime =   80 m / 21.4 s =    3.74m/s

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