| A | B |
|---|
| What gives energy to an object? | forces |
| What determines weight? | gravity |
| What is the SI unit for force? | newton |
| What is the force that opposes motion? | friction |
| What is Newton's first law of motion? | an object at rest stays at rest and an object in motion stays in motion unless acted on by an outside force |
| The inertia of a resting or moving object can be overcome by what? | an outside force |
| What are types of friction? | sliding, rolling, and fluid friction |
| What is Newton's second law of motion? | states that force equals mass X acceleration |
| The acceleration of an object is directly affected by what? | any change in its mass or in the force applied to it |
| What is Newton's third law of motion? | states that for every action exerted on an object an equal and opposite reaction results |
| When the forces of an object are unbalanced what occurs? | motion |
| What are the four universal forces? | gravity, electric, magnetic, & nuclear |
| What is gravitational force? | the attraction between objects in the universe |
| What forces depend upon the charges of objects? | electric & magnetic |
| What force holds together the particles in the nucleus of an atom? | nuclear |
