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21 Cards in this Set
- Front
- Back
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who stated that the earth revolves around the sun
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copernicus
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define friction
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when two objects are sliding past each other
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define weight
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the amount of gravity imposed on an object
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what were the 2 classes of motion
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natural and violent motion
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describe violent motion
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imposed motion
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describe natural motion
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motion that comes form nature, and every object has its proper place.
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how does friction act
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opposite the objects motion
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what does the law of inertia apply to
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both moving and non-moving object
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how does mass relate to inertia
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more mass= more inertia
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what explains why a book remains on a table
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gravity
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if a 10 kg object is still on a table, how much force does the table deliver to keep the object on it
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10N
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when does does equilibrium occur
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when all the forces acting on an object are balanced, the net force on the object is zero
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what net force of a 10 N force in the same direction of a
20 N force |
30 N
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define vector quantity
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can be represented by arrows
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what force is needed to change and objects state of motion
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it needs to be interrupted by an outside force
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describe equilibrium rule
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when the net force on an object is zero, the object is in mechanical equilibrium- this is known as equilibrium rule. a state of no change.
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define dynamic equilibrium
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dynamic equilibrium- when an object moves at a steady pace in a straight line
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what is static equilibrium
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a state of rest
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describe Aristotle's beliefs
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2 types of motion, all objects have their place, all motion is sustained push or pull- earth does not move
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describe Copernicus's beliefs
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assumed that earth and other planets moved around the sun
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describe Galeleo beliefs
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when all the forces acting on an object are balanced, the net force on the object is zero
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