Question 408886
given:
h(t)=-16t^2+8t+600
.
Set h(t) to zero and solve for t:
0=-16t^2+8t+600
dividing both sides by -8:
0=2t^2-t-75
applying the quadratic formula we get:
t = {6.38, -5.88}
you can throw out the negative answer leaving;
t = 6.38 seconds
.
details of quadratic follows:
*[invoke quadratic "x", 2, -1, -75 ] = 0