The key to projectile motion is to realize that the horizontal and vertical motions are independent of each other (except for the time each motion takes). This essentially makes a 2-d problem, 2 1 ...

The last time I looked at this projectile motion lab, I was confused. My different methods for measuring the launch speed of the ball were not even close to being consistent. So, I am bringing out ...

But here's the bit that justifies Dawson's explanation of projectile motion. Basically, a projectile like a golf ball has two velocity components, a horizontal one and a vertical one, as Martin ...