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mid year test
| question | answer |
|---|---|
| what is force | strength of energy of physical movement |
| what is force measured in | newton meter and newtons |
| resultant force | total force acting on an object |
| thinking distance | The distance travelled whilst a driver reacts |
| braking distance | The distance travelled whilst a vehicle brakes |
| stopping distance | Thinking distance + Braking distance |
| extension | When an object gets longer |
| compression | When an object gets shorter |
| tension | A pulling force on both ends of an object |
| weight | A force due to gravity Weight = Mass x Gravity W = m x g |
| gravity on earth | 9.8N/kg |
| pressure | The ratio of force to area Pressure = Force ÷ Area P = F ÷ A |
| insulator | Material that does not conduct heat easily |
| conductor | Material that does conduct heat easily |