Homework Help: Math

Posted by Erica on Monday, November 26, 2012 at 11:48pm.

A rocket is launched from ground level with an initial vertical velocity (v0) of 176 ft/s. After how many seconds will the rocket hit the ground? (Hint: h(t) = -16t2 + v0t + h0)

Math - Steve, Tuesday, November 27, 2012 at 12:04am
h(t) = 176t - 16t^2
it hits the ground when h=0

176t-16t^2 = 0
16t(11-t) = 0
t=11

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