4503848
Description
Flashcards by Cian Chappell, updated more than 1 year ago
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Created by Cian Chappell
almost 9 years ago
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| Question | Answer |
| What is the difference between a scaler and a vector. | Scaler only have a magnitude but vectors have both magnitude and a direction. |
| What is meant by Moment? | A moment is the force multiplied by the perpendicular distance between the line of action of the force and the pivot. |
| What is the principle of moments? | When an object is in equilibrium the sum of the anti-clock wise moments equals the sum of the clockwise moments. |
| What is the equation that links with this digram? | M = F x S |
| What is the centre of gravity? | This is the point in an object where all the weight seems to act. |
| How to find the acceleration of an object? | |
| What are the equation of motion? | |
| What does the gradient mean on a displacement time graph? | Velocity |
| What does the gradient mean on a velocity time graph? | Acceleration |
| Newton's first law | An object continues in a state of rest or uniform motion in a straight line unless acted on by a resultant force. |
| Newton's second law | The rate of change of momentum of an object is directly proportional to the resultant force applied and is in the direction of the resultant. |
| Newton's third law | When two objects interact they exert equal and opposite forces on each other. |
| How to work out the Work-done | Work-done = Force x Distance W = F.d |
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