# Shared Flashcard Set

## Details

Physics Chapter 4-5
Hewitt conceptual physics
7
Physics
11/18/2008

Term
 Acceleration ~ ?
Definition
 * Net Force.* 1/mass.* Net force/mass. (a = Fnet/m)* (mg-R)/ m
Term
 Friction
Definition
 Surface force caused by irregularities, atoms scraping or impeding movement.Friction force goes in opposing direction of motion.NOT affected by speed or area of contact.
Term
 Mass
Definition
 The quantity of matter in an object. Measure of inertia. Kilogram (kg)
Term
 Weight
Definition
 force due to gravity on an objectNewtons (N)1 kg = 9.8 N
Term
 Newton's Second Law
Definition
 The acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of an object.
Term
 Newton's Third Law
Definition
 Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.
Term
 Resultant
Definition
 The sum of two or more vectors.- Parallelogram rule is used when vectors don't act in exactly same direction or opposite directions. - diagonal of a right angle made with vectors on each side.
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