# Shared Flashcard Set

## Details

Force and Motion
#3
16
Science
10/19/2011

Term
 Momentum
Definition
 The amount of force or energy an object has when it is in motion.
Term
 Law of Conservaton of Momentum
Definition
 When two objects collide the total momentum does not change but is only transferred
Term
 Newton's Third Law of Motion
Definition
 For every action force there is an equal and opposite reaction force
Term
 Newton
Definition
 The metric unit for Force (N)
Term
 Action Force
Definition
 In a pair of forces, it is the force that the first object exerts on the second object.
Term
 Reaction Force
Definition
 The force that pushes or pulls back against an action force, in Newtonâ€™s Third Law of Motion.
Term
 Force
Definition
 A push or a pull
Term
 Newton's First Law of Motion
Definition
 Objects at rest tend to stay at rest and objects in motion tend to stay in motion unless acted on by an outside force
Term
 Inertia
Definition
 The tendency of an object to resist any change in motion
Term
 Gravity
Definition
 The force that exists between any two objects, pulling them together.
Term
 Velocity
Definition
 An objects speed in a certain direction
Term
 Friction
Definition
 The force or resistance caused when two objects collide or rub together.
Term
 Acceleration
Definition
 A change in speed or direction
Term
 Newton's Second Law of Motion
Definition
 It can be summed in the formula F=ma
Term
 Weight
Definition
 A measurement of the force of gravity on an object. It is measured in pounds (lbs.)
Term
 Mass
Definition
 A measurement in the amount of matter in an object. It is measured in grams (g) or kilograms (kg)
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