Question
I need help this is for homework this problem but i feel like i can't solve because i am missing some information or am i wrong. If so what am i suppost to do...help me
THe height "h" in feet of an object after "t" seconds is given by the function :
h = -16t^2+70t+8
How long will it take the object to hit the ground? Round answer to the nearest thousandsth.
The ground is at h=0. That is the information you need.
0= -16t^2+70t+8
solve for t. Notice it is a quadratic, and has two solutions. In this case, ignore the negative solution (you can think out why).
THe height "h" in feet of an object after "t" seconds is given by the function :
h = -16t^2+70t+8
How long will it take the object to hit the ground? Round answer to the nearest thousandsth.
The ground is at h=0. That is the information you need.
0= -16t^2+70t+8
solve for t. Notice it is a quadratic, and has two solutions. In this case, ignore the negative solution (you can think out why).