Question 481435
a ball in thrown vertically up with a velocity of 10m/s. 
A.determine the time it takes for the ball to reach the maximum height.
h(t) = -4.9t^2 + 10t
Find the vertex, at t = -b/2a
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B. the speed by which the ball will fall back to the point from where it was thrown.
It's the same, 10 m/sec