| A | B |
|---|
| An object at rest will | stay at rest unless a force acts upon it |
| A balanced force | will not change an object's motion |
| An unbalanced force | will change an object's motion |
| A book on a desk will not move | unless you push it |
| A rolling objects stops becuase of | friction |
| Newtons first law | called the law of inertia |
| Newton's second law | Force = mass X acceleration |
| net force is equal to | object's mass multiplied by its acceleration |
| Newton's third law | Action-Reaction |
| One object exerts a force on a second object | Second object exerts equal force in opposite direction |
| You hit a ball with a bat | Ball pushes back on bat |
