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!

Displacement, Average Speed, and Average Velocity

  1. Sep 4, 2014 #1
    Okay so I don't understand how to do the displacement of distance and time on a graph. I also need help with figuring out the average speed and average velocity. The graph deals with a Turtle's journey.
    On the Y-axis of the graph is distance in meters and the x-axis is time in minutes.
    The y-axis goes from 1-23 and the x going by threes all the up to 66.
    So the coordinates to the dots on the graph are the following: (3,2) (6,4) (12,6) (18,8) (24,10) (28,8) (30,7) (35,10) (40,12) (46,14) (51,14) (54,17) (57,20) (65,20) (66,23) *Also the total distance the turtle traveled was 29 m.

    The following question's are:
    1. What was the turtle's displacement?
    2. What was the turtle's average speed?
    3. What was the turtle's average velocity?



    My answers so far:
    1. 23-0=23 23/66= 2.9 m
    2. 29/66=2.3 m
    3. I don't even know where to begin for this one....
     
  2. jcsd
  3. Sep 5, 2014 #2

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Your first two answers are correct, except that you have the units wrong on one of them.
    Displacement is a vector, velocity is a vector. Average velocity is displacement/time.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted