Calculate a trajectory for an object, when given an angle and a velocity in flash
问题 I am trying to launch a cannonball from a cannon and have it follow a realistic path. The angle of fire changes depending on the orientation of the cannon (automatically orientates to mouse pointer). So what I'm trying to figure out, is how to move a cannonball along a parabolic path, when given an angle, and a set velocity. I've read that this can be done without complicated trigonometry (never listened to it in highschool), and can be calculated simply by adding gravity to the yVelocity