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10 Cards in this Set

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