I'm not a physics student and haven't done any physics work since high school. I've since then forgot most of what I knew and although while researching this problem, everything looks familiar. It just doesn't fit together in my head. This isn't a marked piece of the coursework it's just involved and the coursework really doesn't work without it. I am making a pinball simulation and need to calculate the motion of a ball. At all times I can get the coordinates of the ball (which I don't think really matter, the velocity(speed and angle of movement) and I am given a value for gravity which is 25 L/ms^2 where L is some unit of distance. On each tick of the program the ball will move and then gravity must be applied to it. I need to calculate the new angle the ball will be moving at and the new speed of the ball. Could someone tell me which equations I would use to calculate this.