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A tennis ball is thrown into the air with velocity 56 feet per second. It's height in feet t seconds later is given by f(t)=56t-16t^2 A.) find the average velocity for the time period beginning when t=2 seconds and lasting.... i. 0.5 seconds. ii. 0.1 iii. 0.05. iv. 0.01 B.) using your work in part a, estimate the instantaneous velocity when t=2

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