physic PLEASE I REALLY NEED HELP WITH THIS PROBLEM
posted by lisa .
Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball.
h1(t) =
h2(t) =
When does ball 1 reach the ground? Round to the nearest hundredth. _____seconds
When does ball 2 reach the ground? Round to the nearest hundredth. _____seconds

Before you ask this question again, please answer Steve's questions.
http://www.jiskha.com/display.cgi?id=1373299749 
After they fall?