| A | B |
|---|
| Newton (N) | SI unit for force |
| Balanced forces | the net force is zero |
| Air resistance | acts in the direction opposite to the force of gravity |
| Newton's 1st Law | law of inertia |
| Newton's 2nd Law | F = ma |
| Newton's 3rd Law | For every action force there is an equal but oppostite reaction force |
| Weight | equals mass time the acceleration due to gravity |
| Vector | a quantity with magnitude and direction |
| Scalar | a quantity with magnitude only (no direction) |
| Frictional force | always opposes the direction of intended motion |
