A projectile was launched straight up from the ground with an initial velocity of 48 ft/s. The height of the projectile t seconds after launch is modeled by the function f (t) = - 16t2+48t
How long was the projectile in the air before it hit the ground?
3 seconds
4 seconds
5 seconds
6 seconds
+3
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Home » Mathematics » A projectile was launched straight up from the ground with an initial velocity of 48 ft/s. The height of the projectile t seconds after launch is modeled by the function f (t) =