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Yr 10 Forces
Definitions for Forces
| Term | Definition |
|---|---|
| Distance | Refers to "how much ground an object has covered" during its motion. Units include centimeters, meters, kilometers |
| Time | The quantity measured using a stopwatch or clock. Units seconds/minutes/hours |
| Speed | The distance travelled in a specific amount of time. Describes how fast an object moves. Units are km/hr or m/s. |
| Force | A push or a pull. Something that pushes or pulls on an object in a certain direction, measured in Newtons. |
| Kinetic energy | The energy possessed by a moving object |
| Balanced force | The forces that act on an object and combine to produce a net force of zero. In other words, all of the forces on the object are equal. |
| Unbalanced force | Those forces acting on an object that combine to produce a net non-zero force. This means that some forces are greater than others acting on an object, so the object will be in motion. |
| Friction | A resistance force opposing motion. A force that resists motion whenever the surfaces of two objects rub against each other. Slows objects down. |
| Gravitational energy | The energy found between two masses that pulls objects towards each other. The bigger the mass the greater the gravitational pull and the faster an object travels towards its centre. |
| Magnetic energy | The energy required to set up a magnetic field |
| Electrostatic | Stationary electrical charges in which no current flows; a build up a electrical charge due to friction. It discharges once to cause a shock. |
| Support force | The force that opposes gravitational force. It holds objects up eg table supports the book. |
| Tension | The state or condition of being pulled or stretched. The type of force found in stretched ropes etc. |
| Resultant force | The overall force that results from two or more forces acting together on an object. |
| Newton | The international unit of force . Its symbol is N. |
| Weight | A measure of the force of gravity on the mass of an object. (The strength of the gravitational force pulling down on an object.) |
| Mass | The amount of matter an object contains. Measured in Kg or g. |
| Gravity | The attractive force that objects exert on each other because of their mass. The bigger the mass of an object the greater the gravitational pull of smaller masses. |
| Motion | A change in position over time |
| Net Forces | A combination of all of the forces acting on an object. These determine whether an object will move or not move. (Also means resultant; overall). |
| Joule | Unit for energy |
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kjsime
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