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7th grade physics

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
What is force?   show
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show Not equal, causes an object to move.  
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show Equal, the same strength, an object doesn't move  
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show All forces acting on an object, total forces  
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show an object in motion stays in motion , an object at rest stays at rest unless acted upon by an unbalanced force  
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What is newton's second law of motion?   show
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What is friction?   show
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What is gravity?   show
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What is air resistance?   show
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show The product of an object's mass and velocity  
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show for every action there is an equal and opposite reaction  
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What two factures ddetermine the frictional force between two surfaces?   show
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show Mass is how much matter is in an object and weight is the force of gravity on an object  
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show fluid, static, rolling, and sliding  
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What is the law of universal gravitation?   show
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what is the relationship between mass and momentum?   show
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show The greater the velocity, the greater the momentum.  
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Created by: ooomber
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