Mathematics

4 September, 03:09

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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