| A | B |
|---|
| acceleration | The rate at which the speed or direction of motion of an object changes over time |
| balanced | Describes equal forces that combine to act on an object in opposite directions |
| contact force | A force that requires two pieces of matter to touch |
| force | A push or pull that acts on an object |
| friction | The force that results when two materials rub against each other or when their contact prevents sliding |
| gravity | The force of attraction between any two objects |
| inertia | The tendency of an object to resist any change |
| non-contact force | A force that acts at a distance |
| shadow | An area of partial darkness where light has been blocked by an object |
| O.A.R.S. Abbreviation | Organized, Accountable, Respectful, Servants of Christ |
| Newton's First Law (p.68) | Law of motion says that an object will stay in uniform motion unless a net force acts on the object. |
| Newton's Second Law (p.70) | Law of motion describes how acceleration, mass, and force are related. |
| Newton's Third Law (p.73) | Law of motion states that when on object exerts a force on a second object, the second object exerts a force on the first. |
| F= m x a (p.72) | Force= Mass x Acceleration |
| The greater the mass of an object, the smaller its change in motion will be for a given force.(p.70) | The same force will cause an object will small mass to accelerate more than an object with large mass. |
| What kind of motion do people on an escalator have? (p.67) | Uniform motion is when the speed and direction are not changing. |
| uniform motion | Motion where the speed and direction do not change. |
| net force | The total of all forces acting on a body. |
| combined force | Two forces acting together in the same direction. |
| Why did the books on our head was not suppose to move. (p.76 pots) | The two forces have equal strength & opposite directions. Forces are balanced. |
