Posted by Lor on Tuesday, October 13, 2009 at 11:40pm.
when you are finding displacement from a velocity graph
and it says find the displacement at t=3
do you find the area from the points 0 >3 to the x axis from 0>3 or no?

Physics  MathMate, Wednesday, October 14, 2009 at 7:57am
The area below a velocitytime graph between two instants of time t is the distance travelled. The signed area below the same graph is the displacement.
Therefore the period 0 →3 sec. is correct if this is what your question or teacher wants. If the question asks for the distance travelled between time t=2 and t=3, then it would be the area between those two times.
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