AP Review: Motion in Two Dimensions

The center of gravity is the point at which the entire weight of a body may be considered to be concentrated.

Normal Force is the force keeping an object from falling through a surface. The normal force is always perpendicular to the surface.

Objects that are launched into the air are called projectiles. The path followed by a projectile in motion is called a trajectory.

A force is not required to keep an object in motion.

Motion in the X and Y dimensions are independent of each other.

Gravity is a vertical force, the only one that acts on a projectile.

Projectiles follow a parabolic trajectory once launched.

In Angled Launched, the object is projected up and horizontally at the same time.

Angle affects height and range.