Question

The height of an object projected upward from ground level is given by h=-16t squared + 128t. When will the object be 240 feet above the ground? (Please provide steps/explanation to solve this problem.)

Answer 1

for this question, replace h = 240 into the given equation and solve for t.

240 = -16tsquared + 128t
-240 -240

0=-16tsquared+180t-240

solve for t by using quadratic formula or by regrouping.

goodluck

Answer 2

Thanks for the help. :)