Physics - Physical Quantities, Scientific Notation, Percentage of Accuracy & Precision

physical quantities

these are measurable quantities; a property of a material or system that can be quantified by measurement.

fundamental quantities

these are the quantities that deal with basic measurements and cannot be expressed in other quantities.

derived quantities

this refers to any quantity that is a combination of fundamental quantities obtained by multiplying, dividing, or combining.

meter, kilogram, second, ampere, mole, kelvin, candela

these are examples of fundamental quantities.

energy, moment, speed, area, volume, density, force

these are examples of derived quantities.

measurement

this is the process of comparing something with the standard.

metric system

it is the system of units that the General Conference on Weights and Measures has agreed upon and is legally enforced in almost all parts of the world.

english system

it is a system of measurement used to measure something in inches, yards, and foot/feet.

length x width

this is the formula for area (m²).

area x height

this is the formula for volume (m³).

mass / volume

this is the formula for density (g/mL or kg/cm³).

displacement / time

this is the formula for velocity (m/s).

velocity / time

this is the formula for acceleration (m/sec²).

mass x acceleration

this is the formula for force (Newton).

force x area

this is the formula for pressure (Pascal).

scientific notation

it is a way of writing very large or very small numbers.

exponential notation

it is the other term for scientific notation.

exponent

this determines how many times the decimal will move to the left or right.

base

this is the number that is going to be raised to a power.

accuracy

this refers to the proximity of a measurement to a known value.

precision

this refers to how near multiple measurements are to one another.

time

this is a fundamental quantity that uses the same unit for both metric and english.

1 hour

this is equivalent to 3,600 seconds.

meter

this is the metric system's standard unit for length.

metric

this is a system of measure that is based on 10.

speed

this refers to the distance covered per unit time.

kelvin

this is the base unit for temperature.

kilogram

this is the SI base unit for mass.