FS 1.2 Vocab

Front

propel

Back

To drive, or cause to move, forward.

Front

unbalanced forces

Back

Forces that are not equal in magnitude and are in opposite directions.

Front

mass

Back

The amount of matter in an object. Not to be confused with weight, which is the amount of force that gravity exerts on an object.

Front

acceleration

Back

The rate at which an object speeds up, slows down, or changes direction.

Front

density altitude

Back

The density of the air, which varies at different altitudes. The higher the altitude, the less dense the air.

Front

drag

Back

Resistance of air against the forward movement of an airplane or rocket.

Front

weight

Back

The force of gravity that pulls objects downward. Not to be confused with mass, the amount of matter in an object.

Front

thrust

Back

A force applied to a body to propel it in a desired direction. The force which moves an aircraft or rocket.

Front

propulsion

Back

The means by which aircraft and spacecraft are pushed forward.

Front

magnitude

Back

The size or quantity of something.