algebra
posted by Ressie .
The question I have is to solve the problem.
A model rocket is launched from the ground with an initial speed of 50 feet per second. The equation that models its height, h feet, off the ground t seconds after it was fired is
h=16ft^2+50t
a)How high is the rocket 1 seconds after it was fired?
b)How long will it take the rocket to return to earth?

algebra 
henry
a. h = 50*1  16*1^2 = 34 Ft.
b. V = Vo + g*t
Tr = (VVo)/g = (050)/32 = 1.56 s. =
Rise time.
Tf = Tr = 1.56 s. = Fall time.
T = Tr + Tf = 1.56 + 1.56 = 3.125 s. =
Time t0 return to earth.
t
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