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Forces in Motion
Vocabulary
10
Science
8th Grade
01/14/2011

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Term
Acceleration
Definition
the rate at which velocity changes.
Term
Acceleration Due to Gravity
Definition
A greater force must be applied to a large mass than to a small mass to produce the same acceleration.
Term
Terminal Velocity
Definition
the consant velocity of a falling object when the size of the upward force of air resistance matches the size of the downward force of gravity.
Term
Free Fall
Definition
The condition an object is in when gravity is the only force acting on it.
Term
Projectile Motion
Definition
The curved path an object follows when thrown or propelled near the surface of the Earth
Term
Inertia
Definition
The tendency of all objects to resist any change in motion
Term
Momentum
Definition
a property of a moving object that depends on the object's mass and velocity
Term
Newton's First Law of Motion
Definition
An object at rest remains at rest and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force
Term
Newtons Second Law of Motion
Definition
The acceleration of an object depends on the mass of the object and the amount of force appliedWhe
Term
Newton's Third Law of Motion
Definition
Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.
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