1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: 1d Kinematics, missing something.

  1. Oct 7, 2006 #1
    A person who walks for exercise produces the position-time graph given with this problem.

    02_64.gif

    (b) Calculate the average velocity for each segment to verify your answers to part (a).
    A
    m/s
    B
    m/s
    C
    m/s
    D
    m/s

    B is obviously 0

    For A I did .20 of an hour is 300 seconds.
    And 1km = 1000m

    So 1000/300 =3.33 and that is wrong..

    What am I doing wrong here I used:
    [tex]v_{ave} = \Delta x / \Delta t[/tex]
     
  2. jcsd
  3. Oct 7, 2006 #2

    radou

    User Avatar
    Homework Helper

    The expression for average velocity is correct, but you calculated the time wrong. 1 hour equals 3600 seconds. So, 0.2 hours equals 720 seconds.
     
  4. Oct 7, 2006 #3
    Ah, thank you.

    I corrected my mistake and fixed my answers and they're correct.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...
Similar Threads for Kinematics missing something Date
Subtracting gravity? Tuesday at 10:06 PM
Work/energy to find horizontal displacement Apr 6, 2018
Problem of projectiles Mar 31, 2018
Particle Motion; Graphical Method Mar 27, 2018
Kinematics Problem, seemingly missing information Aug 31, 2008