Posted by **SC** on Wednesday, January 6, 2010 at 8:24pm.

If a ball is throw into the air with a velocity of 40ft/s its height in feet t seconds later is given by: y=40t-16t^2. Find the average velocity for the time period beginning when t=2 and lasting 0.5 seconds.

- Math -
**Marth**, Wednesday, January 6, 2010 at 8:35pm
I assume the ball is thrown straight up, so the velocity only has 1 dimensional components.

The average velocity is the same as the average slope over the given time period.

m = (y1 - y2) / (x1 - x2)

average V = [y(2) - y(2.5)] / (2 - 2.5)

- Math -
**SC**, Wednesday, January 6, 2010 at 8:46pm
ohh i see it now! thank you!

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