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

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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 slide

more or less friction?
Term
Properties
Definition
The amount of friction depends on the ____________ of the surfaces
Term
more friction
Definition
rough surfaces have __________ friction

more 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 False

If 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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