- #1
kp87
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A horse canters away from its trainer in a straight line, moving 140 m away in 10.0 s. It then turns abruptly and gallops halfway back in 4.9 s.
(a) Calculate its average speed.
(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.
I got a right by Vavg=(V+Vo)/2 [(140/10)+(70/4.9)]/2 and got 14.14 m/s.
so I was thinking that for part B it would be [(140/10)-(70/4.9)]/2 and got -.143... and it is wrong...
can anyone help me?
(a) Calculate its average speed.
(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.
I got a right by Vavg=(V+Vo)/2 [(140/10)+(70/4.9)]/2 and got 14.14 m/s.
so I was thinking that for part B it would be [(140/10)-(70/4.9)]/2 and got -.143... and it is wrong...
can anyone help me?