Answer:
x
Step-by-step explanation:
Answer:
9/10 is 90%
Step-by-step explanation:
You just make it a percentage
There must be minus sign with 4.9 .

The given equation is the equation of parabola , which is maximum at its vertex, and the formula of vertex is

So the height is maximum at t=2.55 seconds and to find the maximum height , we need to plug 2.55 for t , that is

So the maximum height is 112 m .