1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Horse Motion Problem

  1. Jan 17, 2007 #1
    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?
     
  2. jcsd
  3. Jan 17, 2007 #2
    First of all ask yourself these questions: "What is an average speed?" Speed is not a vector, it's a magnitude =). What two variables does it depend on? The second asks for the average velocity for the entire trip meaning it's a vector.

    Think about these and it should come a little bit more clearly.
     
  4. Jan 17, 2007 #3
    thx a lot :0
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Horse Motion Problem
  1. Problems on motion (Replies: 1)

  2. Motion Problem (Replies: 3)

  3. Problem on motions (Replies: 1)

  4. Motion problem (Replies: 5)

Loading...