f a ball is thrown into the air with a velocity of 45 ft/s, its height in feet after t seconds is given by y = 45t - 13t^2. Find the instantaneous velocity when t=2.

Would the answer to this be -7?

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- Jul 19th 2010, 01:29 PMbobsanchezInstantaneous Velocity
f a ball is thrown into the air with a velocity of 45 ft/s, its height in feet after t seconds is given by y = 45t - 13t^2. Find the instantaneous velocity when t=2.

Would the answer to this be -7? - Jul 19th 2010, 01:43 PMmr fantastic
- Jul 19th 2010, 02:02 PMbobsanchez
Yes. I took the derivative and substituted 2