# Shared Flashcard Set

## Details

PS9 Chapter 11 Terms
PS9 Chapter 11 Terms - Motion
12
Science
12/11/2008

Term
 law of universal gravitation
Definition
 This says that the gravitational force increases as one or both masses increase and the gravitational force decreases as the distance between the masses increases
Term
 momentum
Definition
 A quantity defined as the product of the mass and velocity of an object (p=mv)
Term
 newton
Definition
 The force that can give a mass of 1kg and acceleration of 1 m/s2
Term
 inertia
Definition
 The tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
Term
 Newton's first law
Definition
 An object at rest remains at rest and an object in motion maintains it's velocity unless it experiences an unbalanced force
Term
 Newton's third law
Definition
 For every action force, there is an equal and opposite reaction force (the law of action and reaction)
Term
 mass
Definition
 The measure of the amount of matter in an object.
Term
 weight
Definition
 This is the gravitational force an object experiences because of its mass
Term
 projectile motion
Definition
 The curved path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth; the motion of objects that are moving in two dimensions under the influence of gravity.
Term
 free fall
Definition
 The motion of a body when only the force of gravity is acting on the body.
Term
 Newton's second law
Definition
 The unbalanced force acting on an object equals the object's mass times it's acceleration. (F=ma)
Term
 terminal velocity
Definition
 The constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
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