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motion/force
| Question | Answer |
|---|---|
| velocity | Speed in a given direction |
| acceleration | The rate of change in an object’s velocity |
| Formula for force | Mass x acceleration |
| Force is measured in ... | Newtons (N) |
| Net force | Combination of all forces acting on an object |
| Balanced forces | Equal forces that act on an object in opposite directions; do not cause a change in motion; no net force |
| Unbalanced forces | Unequal forces that act on an object; cause a change in motion; create a net force not equal to zero |
| Newton’s First Law of Motion | A object in motion will stay in motion and a object at rest will stay at rest unless an unbalanced force acts upon it; also called Law of Inertia |
| friction | force that opposes motion |
| inertia | An objects tendency to resist motion |
| Newton’s Second Law of Motion | When a net force acts on an object, the object will accelerate in the direction of this net force. |
| Newton’s Third Law of Motion | For every force or action, there is an equal and opposite reaction. |
| Formula for mass | Force / acceleration |
| Formula for acceleration | Force / mass |
| Force | a push or pull on an object |
| Sliding Friction | type of friction that occurs when the surfaces of two objects are sliding against each other. |
| Static Friction | type of friction that occurs between 2 objects that are not moving |
| Rolling friction | type of friction that occurs when an object rolls across a surface |
| Unit for acceleration | m/s 2 (2 means squared) |
| Unit(s) for speed | m/s, km/s, mph, km/h |
| Gravity | force that pulls objects towards earth |
| 2 things that impact friction | surface type and force |
| 2 things that impact gravity | mass and distance |
| Fluid friction | friction that occurs when a solid item moves through a fluid |
| A fluid can be what 2 things? | Air or liquid |
| (HONORS ONLY): Accleration due to gravity is measured as ________ m/s2. | 9.8 m/s 2 |
| mass | the amount of matter that is inside of an object |
| weight | a meaure of how much force gravity is pulling down on an object |
| Law of acceleration | newtons 2nd law |
| Law of inertia | newtons 1st law |
| Law of action-reaction | newtons 3rd law |
| Other things Newton discovered besides laws of motion | gravity, calculus, modern telecope |
| speed formula | s = distance/ time |
| acceleration formula | ( Vf - Vi ) / t Final velocity - initial velocity / time |
Created by:
bricie