4374937
Description
Flashcards by Euan White, updated more than 1 year ago
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Created by Euan White
almost 9 years ago
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| Question | Answer |
| What is the equation, unit and symbol for Momentum? | Momentum= Mass x Velocity p=mv Momentum - p kgms^-1 |
| Newton's first law of motion: | An object remains at rest or in uniform motion unless acted on by a force. |
| Newton's second law of motion: | The rate of change of momentum of an object is proportional to the resultant force on it. Resultant force is proportional to the change of momentum per second. |
| What is the equation that describes Newton's second law of motion? | F∝ change of momentum/(time taken) mv - mu / t m(v - u)/ t = ma Including F=ma |
| What is the impulse of a force? | The impulse of a force acting on an object is equal to the change of momentum of the object. the impulse = F∆t = ∆(mv) Force x time force is active |
| What equation could you use to calculate impact force? | F= mv - mu / t (A re-arrangement of impulse). |
| What does the area under a force time graph represent? | The change of momentum or the impulse of the force. |
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