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10 Cards in this Set
- Front
- Back
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Fundamental physical quantities
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Distance, time, and mass
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Distance
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represents a measure of space in one dimension
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time
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based on periodic phenomena-processes that repeat over and over at a regual rate
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Frequency
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The number of cycles of a periodic process that occur per unit time. It is abbreviated f.
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Mass
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a measure of how much matter is contained in an object. It is also a measure of what we somtimes refer to in everday speach as inertia.
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Speed
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Rate of movement. Rate of change of distance from a reference point. The distance something travels divided by the time elapsed.
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velocity
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Speed in a particular direction (same units as speed)
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Vectors
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they have both a numerical size (magnitude) and a direction associated with them. (ex. velocity)
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Scalars
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Quantities that do not have a direction (ex. speed)
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Net velocity
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found by adding two velocities together.
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