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Glossary of Physics Terms

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average velocity
the change in the displacement of something divided by the corresponding change in time, m/s
average acceleration
the change in the velocity of something divided by the corresponding change in time, m/s^2
constant
anything that does NOT change within time of interest
vector
anything that has a direction and a size or magnitude or number
scalar
anything that does NOT have a direction
time
what is measured by a clock; i.e. anythign that is periodic, second (s/sec)
anything
any one thing or any group of things you thnk about when solving a problem (x)
distance
the length of a path traveled
displacement
the straight line distance to something from an orgin plus direction, meter (m)
speed
disance/time
per
divided by
rate
rate=x/t. That means that anything that changes with time is a rate.
mass
the amount of amtter (electrons, protons, and neutrons) in an object

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