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OpenStudy (anonymous):
A projectile is launched from a platform 20 feet high with an initial velocity of 104 feet per second. the height h of the projectile at t seconds after launch is given by h=-16t^2+104t+20 how many seconds after launch does the projectile attain maximum height? what is the maximum height?
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OpenStudy (anonymous):
max height h'=0
OpenStudy (primeralph):
|dw:1373235995866:dw|
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