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How to get velocity and position from an acceleration-time graph?

by veryconfused
Tags: accelerationtime, graph, position, velocity
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veryconfused
#1
Sep5-09, 07:35 PM
P: 2
Consider the plot below describing the acceleration of a particle along a straight line with an initial position of 10 m and an initial velocity of 9 m/s.



1. What is the velocity at 7 s?
2. What is the position at 7 s?
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veryconfused
#2
Sep5-09, 08:02 PM
P: 2
Please help me! I got the answer -12 for #1 and -0.5 for #2, but the computer's telling me these are wrong (it's an online worksheet). I don't understand why?
Jebus_Chris
#3
Sep5-09, 08:11 PM
P: 179
Well you can use the two default equations.
[tex]v=v_o +at[/tex]
[tex]x=v_ot+\frac{1}{2}at^2[/tex]
You'll have to use each equation twice for each problem though.


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