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Year 10 Forces
Year 10 Science - Forces and Motion
Term | Definition |
---|---|
motion | A change in an object’s position. |
friction | A force that occurs when two substances rub together. It will oppose (work against) the movement of an object. |
force | A push or pull. Measured in newtons (N). |
deceleration | Decrease in speed of an object. |
balanced forces | When the forces acting on an object are equal. The speed of the object will stay the same. |
distance | How far an object has travelled. |
speed | How fast an object is travelling (calculated as distance travelled / time taken) |
time | How long a journey takes. |
acceleration | Increase in speed of an object. |
stationary | Not moving. |
matter | The amount of matter or “stuff” in an object. Usually in grams or kilograms. |
gravity | The force of attraction between objects due to their mass. Greatest for massive objects (e.g. the sun, planets). |
weight | The force which results from gravity acting on the mass of an object. Measured in newtons (N). |
newton | The unit by which forces are measured (symbol N). |
drag | Friction that occurs when an object moves through air or water. |
unbalanced forces | When the forces acting on an object are not equal. This changes the motion of the object. |