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Newton's 3 Laws
Laws of Motion
| Question | Answer |
|---|---|
| Newton's 1st Law of Motion | An object in motion will stay in motion, and an object at rest will stay at rest, unless some force causes it to change. |
| Newton's 2nd Law of Motion | The acceleration of an object depends on the mass of the object (how heavy it is) and the amount of force pushing the object. |
| Newton's 3rd Law of Motion | For every action, there is an equal and opposite reaction. The reaction is equal in force and opposite in direction. |
| force | a push or a pull, usually measured in Newtons |
| mass | the amount of matter inside an object, measured in grams or kilograms |
| friction | a force caused when two things rub against one another |
| inertia | the tendency of an object to resist change |
| acceleration | a change in the speed of an object |
| True or False? All objects have inertia, whether they are moving or standing still. | TRUE. Inertia depends on mass, and an object's mass remains the same whether it's moving or standing still. |
| True or False? The amount of inertia an object has depends on its mass. | TRUE. The greater the object's mass, the greater its inertia. |
| True or False? Fast moving objects have more inertia than slow moving objects. | FALSE. Inertia depends on mass, not speed. |
| According to Newton's 2nd Law, what is the formula for calculating force? | F=ma |
| In the formula F=ma, what do the letters F, m and a stand for? | F=ma Force = mass x acceleration |
Created by:
MrArchung
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