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Time

Interval between 2 events. Measure of a duration.
Time Interval: Difference between 2 clock times.

Mass

Amount of matter present in an object. Fundamental quantity. SI unit is Kg.

Length

The amount of 1 dimensional space between 2 real numbers. Usually used for horizontal small distances.

Temperature

Measurement of the average KE molecules in a system. Measured with a thermometer.

Distance

Similar to length. Usually used to describe great length. Always used in physics labs when describing motion.

Speed

How fast an object travels. Rate of change of distance.

Acceleration

Rate of change of speed or velocity. Faster/slower. Speed - positive or negative sign indicates speeding up or slowing down.

Force

Push or a pull. A force that causes an object to undergo a change in motion. Described in the 2nd law.

Pressure

Force applied/ area of application units = n/m2(squared) = pascals

Density

The mass per unit volume of a substance. Mass/volume. Units = kg/m3(cubed). Used for identification.

Inertia

Resistance to change used in first law. Either applies to objects at rest (remaining at rest) or moving uniformly (constant speed, unchanging duration). It is proportional to an object's mass.

Energy

The capacity to do work or transfer heat. 2 classes of energy: potential and kinetic. The forms of energy fall into any of these classes: heat, electrical, KE motion, sound KE, chemical nuclear magnetism, PE of position.

Heat

Form of energy that "flows" between 2 samples of matter due to their difference in temperature.

Scalar

Quantity with size units but no direction. Fundametal Qualities are: scales, temperature, time, length, and mass.

Vector

Quantity with size units and direction. Denoted by arrow over variable symbol. Examples: velocity, displacement, acceleration, and momentum.

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