can anyone show me how to do this kind of problems???? I don't get It! If an object is dropped from a height of 200 feet, the function h(t)=-16t^2+224 gives the height of the object after t seconds. When will the object hit the ground?

Question

can anyone show me how to do this kind of problems???? I don't get It!  If an object is dropped from a height of 200 feet, the function h(t)=-16t^2+224 gives the height of the object after t seconds. When will the object hit the ground?

anonymous · Answer

if you have a graphing calculator, go to y= and enter function into there. Then Hit 2nd window. Set start to 1 and increments to 1. Then hit 2nd graph and go down the table till the y1 value is zero and that x value is the answer.