An rock is dropped from a 199-foot platform. Use the projectile formula h = − 16 t 2 + v 0 t + h 0 to determine when the rock hit the ground. [Recall that v 0 is the initial velocity of the object and h 0 is the inital height of the object. Note that since the rock is dropped, v 0 = 0 . ]

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

just a girl thing, i think im cute when im not lol