Posted by **physics** on Wednesday, August 12, 2009 at 11:28am.

does the slope of a distance vs. time graph show

the average velocity

or the

instaneous velocity

I'm asked the question and don't know which one. I believe that it would be the instaneous value because the slope is refering to one point on the graph... not sure though

- physics -
**drwls**, Wednesday, August 12, 2009 at 12:22pm
You are right. Slope is measured tangent to the position-time curve. If the velocity is changing, there is only one tangent point. Slope of the tangent line is the instantaneous velocity

- QUESTION -
**QUESTION**, Wednesday, August 12, 2009 at 12:46pm
what if the velocity is kept constant

or is suppose to at least

- physics -
**drwls**, Wednesday, August 12, 2009 at 2:54pm
If the velocity is constant (over a finite time interval) the average velocity during that interval and the instaneous velocity are the same.

- physics -
**QUESTION**, Wednesday, August 12, 2009 at 3:23pm
Thanks =]

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