Physics Vocab. Chaper 1 and two

A general hypothesis or statement about the relationship of natural quantities that has been tested over and over again and has not been contradicted. Also known as principle.

A synthesis of a large body of information that encompasses well tested and verified hypothesis about aspects of the natural world.

Motion under the influences of the gravitational force only.

A close agreement by competent observers of a series of observations of the same phenomena.

An educated guess; a reasonable explanation of an observation or experimental results that is not fully accepted as factual until tested over and over again by experiment.

Speed at any instant of time

A general hypothesis or statement about the relationship of natural quantities that has been tested over and over again and has not been contradicted. Also known as law.

An orderly method for gaining, organizing, and applying new knowledge.

The time that has passed since the beginning of an event.

Elapsed time

Speed together with the direction of motion.

The rate at which velocity s changing. The change may be in magnitude, direction, or both.

Path distance divided by time interval

How fast something is moving; the path distance moved per time. The magnitude of the velocity vector.

In physics, how fast something happens, or how much something changes per unit of time; a change in quantity divided by the time it takes for the change to occur.

Regarded in relation to something else. Depends on the point of view, or frame of reference. Sometimes referred to as "with respect to"