The equation is f(t)=5+96t-16^2
The answer the book gets is 149. How was that determined?
Thanks in advance
2007-09-15 08:17:19 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You shoot an arrow vertically in the air from a height of 5' with the initial velocity being 96'/sec.
Determine the max height the arrow will attain
2007-09-15 08:33:43 · update #1
What are you being asked to do with this equation?
Assume 16^2 is 16t^2
2007-09-15 08:22:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
f(t) = 5 + 96t -16 t^2
They must be asking for the maximum value
This occurs wheen t = 3
Thus f(3) = 5 +96*3 -16*3^2= 5 +288 - 144 = 149
2007-09-15 15:49:57 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
if
-16t^2 + 96t + 5 = 149
-16t^2 + 96t - 144 = 0
16t^2 - 96 t + 144 = 0
(4t - 12)^2 = 0
t = 3
The question might be
what should be the value of the expression to make f(t) a perfect square?
2007-09-15 15:38:23 · answer #3 · answered by mohanrao d 7 · 0⤊ 0⤋
That's a function, not an equation. In order to solve it, we need to know what t is.
The function you provide is basically a statement, and not something that can be solved
2007-09-15 15:23:31 · answer #4 · answered by snoboarder2k6 3 · 0⤊ 0⤋