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Forces in Motion

Vocabulary TermDefinition
free fall The condition an object is in when gravity is the only force acting on it.
intertia The tendency of all objects to resist any change in motion.
momentum The property of a moving object that depends on the object's mass and velocity.
projectile motion The curved path an object follows when thrown or propelled near the surface of Earth.
terminal velocity The constant velocity at which a falling object travels when the size of the upward force of air resistance matches the size of the downward force of gravity.
Newton's First Law of Motion An object at rest remains at rest and an object in motion remains in motion at a constant speed and in a straight line unless acted upon by an unbalanced force.
Newton's Second Law of Motion The acceleration of an object depends on the mass of the object and the amount of force applied. ma=F or a=F/m or m=F/a
Newton's Third Law of Motion Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.
Created by: pthomas
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