Need help solving this problem and help if I ever see it again!!!!!
Suppose an object is dropped from a height h0 above the ground. Then its height after t seconds is given by h = −16t ^2 + h0, where h is measured in feet. Use this information to solve the problem.

A ball is dropped from the top of a building 78 ft tall. (Round your answers to three decimal places.)

(a) How long will it take to fall half the distance to ground level?
t = . sec

(b) How long will it take to fall to ground level?
t = . sec

Question

Need help solving this problem and help if I ever see it again!!!!! 
 Suppose an object is dropped from a height h0 above the ground. Then its height after t seconds is given by h = −16t ^2 + h0, where h is measured in feet. Use this information to solve the problem.

A ball is dropped from the top of a building 78 ft tall. (Round your answers to three decimal places.)

(a) How long will it take to fall half the distance to ground level? 
 t = . sec

(b) How long will it take to fall to ground level? 
 t = . sec