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Level 29

Forces & Motion

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An object is moving if its position relative to a fixed point is changing.
_______ is the property of an object that leads it to resist any change in motion
balanced force
Equal forces acting on an object in opposite directions
a body of coherent matter, usually of indefinite shape and often of considerable size
(interactions between two objects)
unbalanced force
force acting on an object that causes a change
a speed in a particular direction.
net force
Acceleration depends on the
(physics) a rate of change of velocity
(physics) the force of attraction between all masses in the universe
A force that comes from gravity pulling down on any object with mass
Law of Inertia; Newton's First Law
an object at rest stays at rest AND an object in motion stays in motion unless acted on by an outside force
Newton's second law
Acceleration is produced when a force acts on a mass, the greater the mass, the more force is required to accelerate the object.
Newton's Third Law
All forces come in pairs. The two forces in a pair act on different objects and are equal in strength and opposite in direction.