9. a)
A football is kicked into the air. It's height in meters after t seconds is given by h(t) = -4.2(t – 3.2)2 + 25.
What was the height of the football when it was kicked?
I
b)
What was the maximum height of the ball?
At what time was the maximum height reached?
c)
How high was the ball after 1 second?
d)
Was the ball still in the air after 5 seconds?
0