Question 456241
5 + 50t - 16t^2 = 0
0 = 16t^2-50t-5
apply the "quadratic formula" to get:
t = {3.222, -0.097}
we can throw out the negative answer leaving
t = 3.2 seconds
.
details of quadratic to follow:
*[invoke quadratic "t", 16, -50, -5 ]