Question 161256
The problem gives you the equation:
s = 16t^2 + 32t
.
And, it gives you 's', the distance 175 feet
.
175 = 16t^2 + 32t
0 = 16t^2 + 32t + 175
Since we can't factor, we must apply the quadratic equation.
It will produce two numbers:
t = (2.5, -4.5)
We can toss out the negative answer (since it doesn't make sense)
Solution: 2.5 seconds
.
Below is the quadratic equation solved:
*[invoke quadratic "x", 16, 32, -175 ]