Motion

Motion Diagram

A series of images showing the positions of a moving object across successive intervals of time.

Particle Model

A modified motion diagram where a series of single points replaces the object in motion.

Position

The separation between an object and the origin.

Position-Time Graph

A graph that plots the known position of an object at various points in time.

Vectors

Quantities that have both magnitude and direction.

Scalars

Quantities that represent size without direction.

Displacement

The change in position, calculated as $\text{ }\newline \text{ }\newline \text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\newline \text{ }$ \Delta d = d_f - d_i.

Average Velocity

The change in position divided by the time taken.

Average Speed

The total distance traveled divided by the time interval.

Acceleration

The change in velocity during measurable time intervals divided by the time interval.

Instantaneous Acceleration

The change in velocity at an exact instant in time.

Trajectory (Projectile Motion)

The path that a projectile follows through space.

Centripetal Acceleration

Acceleration directed toward the center of a circle for an object in uniform circular motion.

Pressure

The force on a surface divided by the area of that surface, measured in Pascals (Pa): $P = \frac{F}{A}$.

Pascal's Principle

States that an applied pressure is transmitted undiminished throughout a fluid.

Archimedes' Principle

The physical law stating that the upward buoyant force exerted on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.