Airplanes are often used to drop water on forest fires in an effort to stop the spread of the fire. The time t it takes the water to travel from height h to the ground can be derived from the equation h=1/2•gt^2 where g is the acceleration due to gravity (32 feet/second2).
Determine the equation that will give time as a function of height.

Question

Airplanes are often used to drop water on forest fires in an effort to stop the spread of the fire. The time t it takes the water to travel from height h to the ground can be derived from the equation h=1/2•gt^2 where g is the acceleration due to gravity (32 feet/second2).
Determine the equation that will give time as a function of height.

anonymous · Answer

You have h as a function of time, invert the equation by solving it for t as a function of height. h = gt²/2 multiply by 2 2h = gt² divide by g 2h/g = t² extract the principal square root of both sides: t = √(2h/g) 2 years ago http://answers.yahoo.com/question/index?qid=20111122084929AA1XVBT

anonymous · Answer

that's not an answer choice

anonymous · Answer

what is the multiple choice then ?

anonymous · Answer

attachment