earth forces INV 4 Vocab

Front

Force

Back

push or pull on an object

Front

Gravity

Back

the force that exists between all objects and tends to pull them together

Front

Motion

Back

description of how an object is moving

Front

Weight

Back

the force of gravity on an object

Front

Balanced

Back

equal, but opposite forces

Front

Unbalanced

Back

forces are not equal and opposite

Front

Speed

Back

how quickly an object is moving

Front

Acceleration

Back

speed up, slow down, or change direction

Front

Normal contact force

Back

perpendicular force between two surfaces

Front

Friction

Back

a force between two surfaces in contact with one another that resist motion