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unit 4 lesson 1 and 2

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
surface resistance to relative motion   friction  
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the force of attraction   gravity  
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physical power or strength   force  
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rapidity in moving   speed  
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the property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force. b. an analogous property of a force   inertia  
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the amount or quantity of heaviness or mass amount a thing weighs.   weight  
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rapidity of motion or operation   velocity  
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the capacity for vigorous activity   energy  
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the exertion of force upon a surface by an object   pressure  
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increase of speed or velocity   acceleration  
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the act or an instance of directing   direction  
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the action or process of moving or of changing place or position   motion  
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to draw with force   drag  
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exertion or effort directed to produce or accomplish something   work  
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usually of indefinite shape and often of considerable size   mass  
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