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11 Cards in this Set
- Front
- Back
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three laws of motion
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used to explain how and why stuff move.
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Newton's First Law of Motion
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An object in motion will stay in motion, and an object at rest will stay at rest unless an unbalanced force acts on it
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Newton's Second Law of motion
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An object that has an unbalanced force acting upon it will accelerate in that direction of that force.
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Newton's Third Law of motion
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forces always occur in equal and opposite pairs
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wheel
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A simple Machine
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Axle
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Wheel has to rotate on an axle in order for it to do any good
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Simple Machines
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Allow us to move things more easily by magnifying our efforts
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Wheel and Axle
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rotating lever that moves in a circular motion around a fulcrum
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Formula to calculate work
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work equals force times distance
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When is work done
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When a force makes an object move in a direction parallel to that force
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units of work
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joules
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