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# Physics A dud

### Physics stuff

Accuracy The closeness to the real value
Precision How good you are at repeating the result
Area The amount of square units in a two dimensional shape
Volume The amount of cubic units in a 3D space that an object takes up
Mass Amount of matter in object
Weight The force a mass experiences due to the presence of a gravitational field
Density Amount of matter in a given space (mass per volume)
Kilometer (km) 6 city blocks (just over half a mile)
Meter (m) Length of an adult leg
Millimeter (mm) Length across the edge of a dime
Kilogram (kg) Liter of water, average dictionary
Gram (g) 1 dollar bill
Reference Frame A coordinate system used to measure position and orientation of an object
Position The area an object occupies
Scalar A quantity which can be described by a single number
Vector A quantity that has magnitude and direction
Distance Numerical description of how far apart objects are
Displacement Shortest distance from the initial to final point
Speed An object's magnitude of its velocity
Velocity Rate of change of the position of an object
Constant Velocity Velocity that does not change
Average velocity Distance divided by time
Instantaneous velocity Velocity at a certain point in time
Acceleration The rate at which the velocity of a body changes with time
deceleration To slow down
Created by: drak1