Projectile motion is two-dimensional The key to analyzing projectile motion: Treat it as a combination of horizontal motion with constant velocity and vertical motion with constant acceleration! Separate equations for x and y direction! How long is the baseball in the air? How far does it fly? 2v 0 sina X = v 0 cosa G Which angle should I hit at to maximize distance? Hitting two baseballs with same initial velocities but different angle- which baseball will hit the ground first? If I hit at the same angle but with twice the initial velocity, how much further does the baseball go? Which angle should I hit at to maximize distance? Which baseball will hit the ground first?