In high school physics I wrote a parabolic motion simulator. You could set the angle and initial velocity, and it would draw the path of the projectile. I made it so you could set the force of gravity. I also added the ability to set a horizontal force just for shits and giggles.

When I was in gym class later, we were out on the field playing baseball. I saw a ball hit into the wind and the trajectory matched my simulation of the trajectory of a projectile with a horizontal force acting on it.

So, I was pretty pleased by that.