Relativity and Spacetime

Hypothetical motion relative to a universally preferred state of rest.

Classical assumption that time intervals are the same for all observers.

A change in an object's velocity, including changes in speed or direction.

Speed of an aircraft relative to the surrounding air.

Principle that the laws of mechanics have the same form in all inertial reference frames.

Apparent deflection of motion when observed from a rotating reference frame.

Idea that a newer theory reproduces the successful predictions of an older theory within the older theory's valid domain.

(apparent force)– A force that appears in an accelerating reference frame but is not caused by a physical interaction.

The principle that the laws of mechanics are the same in all inertial reference frames.

Equations that relate position, velocity, and time measurements between inertial reference frames moving at constant velocity relative to one another.