# Shared Flashcard Set

## Details

Conceptual Physics - Prentice Hall
Vocabulary Terms - Chapter 3
10
Physics
09/23/2011

Term
 Aristotle
Definition
 Greek scientist, philosopher and educator who studied motion and divided it into two types: natural motion and violent motion
Term
 Nicolaus Copernicus
Definition
 Astronomer who proposed the theory that Earth moved around the sun
Term
 Galileo
Definition
 Scientist of late-Renaissance Italy who was outspoken in his support of Copernicus. He suffered a trial and house arrest. He argued that only when friction is present - as it usually is - is a force needed to keep an object moving
Term
 Friction
Definition
 Name given to the force that acts between materials that touch as they move past each other
Term
 Inertia
Definition
 The property of a body to resist changes to its state of motion
Term
 Newton's first law
Definition
 Usually called the law of inertia; a restatement of Galileo's idea that a force is not needed to keep an object moving; states that every object continues in a state of rest, or of uniform speed in a straight line, unless acted on by a nonzero net force.
Term
 Mass
Definition
 Quantity of matter in an object; the measure of the inertia, "or laziness," that an object exhibits in response to any effort made to start it, stop it, or change its state of motion.
Term
 Kilograms
Definition
 A fundamental unit in which mass is measured in
Term
 Weight
Definition
 Force of gravity on an object
Term
 Newton
Definition
 The SI unit of force
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