Quick Review: Gravitational Force and Inclined Planes

• 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.

Horizontal Projectile Motion

• 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.

Angled Projectile Motion

• 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.