Question 1198104
A ball is thrown upward. The path of the ball is modelled by the equation: h=-4.9t^2 + 9.9t + 1, where h is the height of the ball above the ground (in meters) and t is time (in seconds).

Time (s) Height (m)
0.0     
0.5
1.0
1.5
2.0
2.5
3.0

a) How long will it take the ball to reach the maximum height?
It's a parabola.
The vertex, max height, is at t = -b/2a
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b) After how many seconds will the ball land?
When h=-4.9t^2 + 9.9t + 1 = 0