h = –16t^2 + 90t + 10
How long will it take the object to hit the ground? Round your answer to the nearest thousandth.
2007-10-13 04:16:41 · 3 answers · asked by Joe T 1 in Science & Mathematics ➔ Mathematics
hit the ground means h=0
solve -16t^2 +90t + 10 = 0 using the quad formula
t = (-90 +/- Sqrt(90^2 +4*16*10)) / -32
and drop the negative answer
2007-10-13 04:28:02 · answer #1 · answered by norman 7 · 0⤊ 0⤋
all of us know that the article has a relentless acceleration of -32ft/s^2 , it relatively is the 2nd derivative of the given height function it relatively is acceleration. the article hits the floor while h=0. fixing -16t^2+100t+5=0 16t^2-100t-5=0 We get carry of t=6.3s and a destructive value. The destructive value could be eradicated as time is often effective.
2016-10-22 06:23:48 · answer #2 · answered by ? 4 · 0⤊ 0⤋
This question is impossible to answer as it has 2 unknown values. It can only be solved if a value for one of them is given. Sorry I couldn't help
2007-10-13 04:21:45 · answer #3 · answered by Kaz Wilkosz 2 · 0⤊ 0⤋