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13 Cards in this Set
- Front
- Back
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What is a force
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A push or pull in a certain direction
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What does the SI unit measure force in
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Newtons (N)
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What are balanced forces
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Forces that are equal and opposite (no motion)
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What are unbalanced forces
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Forces that are unequal or unbalanced ***the object will move in the direction of the net force***
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What is friction
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The force that opposes motion
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What are the four types of friction
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Static; Sliding; Rolling; and Fluid
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What is static friction
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Friction between two objects that aren't moving
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What does static mean
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Not moving
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What is sliding friction
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Friction that occurs when two surfaces are moving past each other
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What is rolling friction
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Friction that involves wheels
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Which is greater sliding or rolling friction
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Sliding
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What is fluid friction
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Friction that involves either a liquid or a gas ***reduces the amount of friction***
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What is an example of fluid friction reducing the amount of friction
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You can move a boat on water, but not on land
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