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Motion

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Acceleration   increase in the rate or speed of something  
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average speed   an object tells you the (average) rate at which it covers distance.  
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inertia   A tendency to do nothing or to remain unchanged  
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law of conservation of momentum   when some bodies constituting an isolated system act upon one another, the total momentum of the system remains constant  
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Mass   A coherent, typically large body of matter with no definite shape.  
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Momentum   : a property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity  
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Speed   Rapidity of movement or action  
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Velocity   The speed of something in a given direction  
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instantaneous speed   In kinematics, the speed of an object is the magnitude of its velocity  
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Displacement   The moving of something from its place or position.  
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