2551996
Description
Flashcards by I M Wilson, updated more than 1 year ago
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Created by I M Wilson
over 9 years ago
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| Question | Answer |
| Resultant Force | The overall force on a point or object. |
| Velocity | How fast you are going with a distance. |
| Gradient | Change in distance divided by the change in time. |
| Acceleration | How quickly the velocity is changing. |
| Gravitational Force | Force of attraction between all masses. |
| Stopping Distance | Thinking distance + Braking Distance |
| Speed | How fast you are going. |
| Terminal Velocity | How fast an object can possibly fall. |
| Light Depentant Resistor | More Light = More resistance |
| Acceleration | A change in velocity in a positive way i.e. an object getting faster. |
| Thinking distance | The length a vehicle travels while the driver is reacting to a situation. |
| Braking distance | The length a vehicle moves from the moment the brakes are applied to when it has come to a complete stop. |
| Motion | The process of an object changing position, orientation or location. |
| Weight | mass x gravity measured in kg |
| mass | The amount of a substance. The mass stays the same regardless of where it is but how much it weighs will change depnding on the gravity. |
| Terminal velocity | The fastest speed possible. Happens when the opposing forces (e.g. gravity and air resistance) are balanced. |
| Speed | A way of measureing the distance travelled in a certain amount of time. |
| Gravitational force | The amount of attraction an object has on other objects. |
| Resultant force | The overall force acting on an object. |
| calculation for acceleration | (v-u)/t |
| Limit of proportionality | The point where a law no longer applies, e.g. Hooke's law, springs stretch proportionaly until the limit is reached then they over stretch and their elasticity is permanently changed. |
| Kinetic energy | Energy present in any moving object. (All particles above 0K are moving so we only really class movement if it is visible) |
| Stopping distance | The total length travelled by a vehicle from the moment a situation occurs until it has come to a complete stop. Thinking distance + Braking distance |
| LDR | An electrical component. When the light level changes the resistance changes. Used in light sensors for street lamps. |
| Gravitational potential energy | The energy stored in an object that has been raised about the surface of the planet. |
| Radioactive | A substance that emits either alpha, beta or gamma radiation naturally. |
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