| Term | Definition |
|
Motion |
When an object changes position over time in comparrison to a reference point |
|
speed |
the rate at which an object moves |
|
velocity |
the speed of an object in a particular direction |
|
accesleration |
the rate at which velocity changes |
|
force |
a push or a pull |
|
net force |
the force that results from combining all the forces exerted on an object |
|
friction |
a force that opposes motion between two surfaces that are touching |
|
gravity |
a force of attraction between two objects due to their masses |
|
weight |
a measure of the gravitational force exerted on an object |
|
mass |
the amount of matter in an object |
|
newtons |
a unit which expresses force |