Use the position equation given below, where s represents the height of the object (in feet),

Use the position equation given below, where s represents the height of the object (in feet), v0v0 represents the initial velocity of the object (in feet per second), s0s0 represents the initial height of the object (in feet), and t represents the time (in seconds), as the model for the problem.

s=−16t2+v0t+s0s=−16t2+v0t+s0

You drop an object from the top of the CN Tower in Toronto, Ontario. The tower has a height of 1815 feet.

Determine the time interval during which the object reaches the ground.