We are told that the time t in seconds that it takes an object to fall h feet — assuming that there is no air resistance — can be determined by the following formula.
t = sqrt(h)/4We are also given that a skydiver jumps from an airplane and free falls for 10 seconds before opening the parachute. To find the distance that she free falls, let's substitute t = 10 into the given formula.
10 = sqrt(h)/4
Note that we obtained a radical equation — an equation containing variables in the radicand. While solving the radical equation, let's first isolate the radical and then apply the Power Property of Equality.
