Question 51213This question is from textbook Beginning Algebra
: I really need some help with this one.
The height h in feet of an object after t seconds is given by the function
h= 16t^2 + 70t + 8
HOw long will it take the object to hit the ground? Round your answers to the nearest thousandth.
This question is from textbook Beginning Algebra
Answer by THANApHD(104)   (Show Source):
You can put this solution on YOUR website! actually to answer for this queation we need some more data, like
whether object is still moving or motionless, and the time "t" is what kind of time ,from where it is measured? like that...
But beyond these quations I can answer U if I've to assume some stuffs.
if an object travels with acceleration of a, would be in a distance of
H
where H = u^2+1/2at^2 (u - intial velocity)
So we don't have any initial velocity as the object free falls,
1/2at^2 = h
1/2*10*t^2 = 16T^2+70T+8 (gravitational acceleration approx-10)
t =((16T^2+70T+8)/5)^(1/2)
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