Relative, Projectile, and Circular Motions

Relative Motion

Refers to the movement of an object as observed from a particular frame of reference.

Frame of Reference

The point of view used to observe and measure motion.

Projectile Motion

The motion of an object thrown into the air, influenced only by gravity.

Trajectory

The path followed by a projectile or other object moving through space under the influence of given forces.

Horizontal

Components of projectile motion analyzed along constant velocity.

Vertical

Components of projectile motion analyzed along accelerated motion due to gravity.

Uniform Circular Motion

Motion of an object in a circle at constant speed.

Centripetal Acceleration

The acceleration is directed toward the center.

Period

Time for one full revolution

Frequency

Revolutions per unit time.

Tangential Velocity

Speed along the circular path.

Tangential Acceleration

Change in tangential speed; acts perpendicular to centripetal acceleration.