# Shared Flashcard Set

## Details

Newton's laws of motion
study
29
Physics
Not Applicable
10/04/2005

Term
 inertia
Definition
 The tendency of an object to remain at rest or in motion
Term
 First Law of Motion
Definition
 Objects at rest tend to stay at rest. Objects in motion tend to stay in motion.
Term
 What happens when a car stops suddenly?
Definition
 inertia will cause an unrestrained person to travel forward at the car's original speed
Term
 Newton's Second Law of Motion
Definition
 An object that is at rest or in motion will not change its condition unless something causes the change. Object will speed up, slow down change direction, etc, only when some force acts on it
Term
 Force
Definition
 push or pull
Term
 newton
Definition
 a unit used to measure force
Term
 F= m x a
Definition
 mathematical formula that shows how force causes change in speed or direction of an object
Term
 Friction
Definition
 A force that occurs between surfaces that are in contact with each other. Friction resists the motion of one surface over another.
Term
 xxx
Definition
 xxx
Term
 acceleration
Definition
 the rate of change in velocity
Term
 velocity
Definition
 describes the speed and direction of an object
Term
 mass
Definition
 the amount of matter in an object
Term
 speed
Definition
 the rate of change in position or rate of motion
Term
 inertia
Definition
 property of a body that resists any change in velocity
Term
 rest
Definition
 zero velocity
Term
 momentum
Definition
 mass of an object multiplied by its velocity
Term
 air resistance
Definition
 upward force of air against a moving object
Term
 pairs
Definition
 forces always come in pairs
Term
 direction
Definition
 two objectw with the same velocity must be moving in the same "direction"
Term
 gravity
Definition
 a force that acts on all objects on earth
Term
 Newton;s thrid law of motion
Definition
 For every action or force there is an equal or oppisite action or force
Term
 Less Friction
Definition
 Objects that roll produce _________friction than objects that slidemore or less friction?
Term
 Properties
Definition
 The amount of friction depends on the ____________ of the surfaces
Term
 more friction
Definition
 rough surfaces have __________ frictionmore or less ?
Term
 less friction
Definition
 smooth surfaces have ___________ friction
Term
 10N
Definition
 what force is needed to achieve 5 m/s acceleration of an object with a mass of 2 kg?a. 5N b. 2N c. 10N
Term
 3 kg
Definition
 What is the mass of an object with a force of 15N an acceleration of 5 m/s2?
Term
 Newton's Second Law
Definition
 Which law helps us to find the mass of an object
Term
 True
Definition
 True or FalseIf a large force is required to overcome the inertia of a body and get that body moving, the body has a lot of mass.
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