Question

Help meeeeeeeeeeeee pleaseeee rnnn!!!

Answer 1

`s(t) = 213 \\ - 16t {}^(2) + 126t = 213 \\ - 16t {}^(2) + 126t - 213 = 0`

Solve the quadratic equation

`t_(1) \approx2.45716 \: seconds \\ t_(2) \approx5.41784 \: seconds`

The reason we get two answers is because maybe that ball reached a maximum height that is higher than 213, then it would pass that 213 marked line twice, once going up and once going down

If we got no roots from solving the quadratic, it would imply that that ball did not reach a height of 213