parabola

[teach]

H=-6(t-2.5)2 +38.5



1) What was the maximum height of the ball?

2) What was the height of the ball when it was hit?

3) How many seconds after it was hit did the ball hit the ground, to the nearest second?

4) Find the height of the ball 1s after it was hit.

 

[jwpaine]

What have you tried?

1.) find the vertex

2.) substitute 0 for t and solve for H

3.) find the t intercepts

4.) substitute 1 for t and solve for H