Homework Help: calculus

Posted by Heather on Saturday, February 9, 2013 at 2:07pm.

A batter hits a ball 3 feet from home plate along the path x=69t, y=3+40t-16t^2. How long is the ball in flight and how far does it travel?

calculus - Steve, Saturday, February 9, 2013 at 2:15pm
the ball is in flight till y=0:
t=2.57

after 2.57 seconds, x=177.53 ft

note that the problem should have said the ball was hit 3 ft above</it> home plate.

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