mr. alim's science class launched a toy rocket from ground level wih an initial velocity of 60 feet per second. the height h of the rocket in feet above the ground aftert seconds is modeled by the equation h=60t-16t^2. how long was the rocket in the air before it returned to the ground?
thanks for any help and sorry about my typing. i'm on my ipod
thanks for any help and sorry about my typing. i'm on my ipod
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solve h =0
60t - 16t^2 = 0
4t(15 - 4t) = 0 ---> t=0 , t=15/4
answer 15/4 sec
60t - 16t^2 = 0
4t(15 - 4t) = 0 ---> t=0 , t=15/4
answer 15/4 sec