Samantha threw an apple out of a window from the tenth floor of her apartment building. The
equation y = -16t? + 120 can be used to represent the fruit's height above the ground, where
t represents time, in seconds, after she threw the apple. How long did it take the apple to hit the ground? Round your answer to the nearest hundredth.
To find out how long it took for the apple to hit the ground, we need to set y (height above the ground) equal to 0 and solve for t:
0 = -16t^2 + 120
16t^2 = 120
t^2 = 120/16
t^2 = 7.5
t = √7.5
t ≈ 2.74
Therefore, it took approximately 2.74 seconds for the apple to hit the ground.