Are both the h and s equal to 300?

[belle<3]

If they are I'm okay. If not how do I get t as the only variable?

An object is dropped from an initial height of s feet. The object’s height at any time t, in seconds, is given by h = -16t^2 + s. How long does it take for an object dropped from 300 feet to hit the ground? Round your result to two decimal places.

 

[tkhunny]

1) Substitute s = 300. This represents the starting height of 300 ft
2) Substitute h = 0. This represents hitting the ground.
3) Solve for t. What tools do you have? All you need on this one is a square root.

 

[belle<3]

alright!

thank you very much I found that t is approximately 4.33.