What is an example of a real world parabola and what is it's equation?

In volleyball, after an underhand serve, the ball goes up and over the net reaching its maximum point, and then slopes downward back at the ground. This is a parabola. If the server hits the ball from directly behind the net (0,0),  the net is 10ft high, and the ball goes 10ft across the court, then what is the equation?

Equation : y = 0.5(x-10)^2+5

Ithink the answer will be d yes

A. dividing 99 by 204 will tell you that 99 out of 204 of the people were females at the action movie.