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18 Cards in this Set
- Front
- Back
Periodic motion
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swinging back and forth like a pendulum in a grandfather clock
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Circular motion
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swinging in a circle
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Vibrational motion
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vibrating (moving back and forth quickly)
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Average speed
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how far an object goes in a certain amount of time (speed = distance / time)
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Point of reference
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a place you are observing the motion from (seeing a car move while in it versus on the side of the road watching it)
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Velocity
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speed and direction (40mph south)
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Force
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push or pull
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Magnitude
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size of force
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Direction
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way the force is acting
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Gravitational force
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force that every object exerts on every other object
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Magnetic force
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push or pull from a magnet
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Electric force
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push or pull from electrically charged objects
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Friction
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force that resists movement when two objects are rubbed together
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Work
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force moves an object a certain distance
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Speed equals
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distance divided by time
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Gravity pulls objects toward
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Earth's center
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Weight is
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the amount of gravity on an object
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Work equals
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force times distance
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