Answer:
1.5 seconds.
Step-by-step explanation:
The height of ball modeled by the equation:
where, t is time in seconds.
The leading coefficient is negative, it means the given function is a downward parabola and vertex of the downward parabola is the point of maxima.
If a parabola is defined by
, then the vertex of the parabola is
In the given equation, a=-16, b=48 and c=100.
Vertex of the given parabola is (1.5,136).
Therefore, the maximum height of ball is 136 ft after 1.5 seconds.