This graph shows his elevation (in meters) on the vertical axis as time elapses (in seconds) on the horizontal axis. Oh, I scaled the video based on the actor’s height (1.73 meters, or 5'8").

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 ...