| A | B |
|---|
| Force | a push or pull that one body applies to another |
| Net force | when two or more forces combine at the same time. |
| Balanced forces | equal in size and opposite in direction. |
| Unbalanced forces | unequal in size and/or not in the same direction. |
| Inertia | an object's resistance to any change in motion. |
| Mass and inertia | an object with greater mass has a greater inertia. |
| Newton's 1st law | an object moving at a constant velocitykeeps moving at that velocity unless a net force acts on it. |
| S.I for force | Newtons. |
| Equation for force | net force =mass x acceleration. |
| Newton's 2nd law | that if an object is acted on by a net force, the change in velocity will be in the direction of the net force |
| Equation for acceleration according to Newton's 2nd law | acceleration = net force/mass |
| Newton's 3rd law | when one object exerts a force on a second object, the sceond force exerts an equal force in the opposite direction |
| What will an object acted on by a net force do? | accelerate |
