Composition refers to the organization, arrangement, and combination of objects within the borders of a drawing space. For a great drawing, you want to bring the eyes of the viewer toward your center of interest within an aesthetically pleasing composition.
The idea that clockwise motion represents the forward motion of time so powerful that it's hard to look at such a watch or clock without having the slightly unsettling feeling that time is running backwards.
Kinematics of Projectile Motion. The pattern of change in the vertical velocity of a projectile is symmetrical about the apex. Vertical velocity decreases as the ball rises and increases as the ball falls due to the influence of gravitational force.