5247832
Descrição
FlashCards por Leann McLeod, atualizado more than 1 year ago
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Criado por Leann McLeod
mais de 8 anos atrás
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| Questão | Responda |
| What are micrometer screws used for? | Measuring very small Distances |
| What is the difference between speed and velocity? | Velocity is the measure of speed in one direction. Speed is how much distance travelled in a certain amount of time. Velocity is a vector quantity whereas speed is a scalar quantity |
| What is the gradient in a distance-time graph? | Speed |
| What is the gradient in a speed-time graph? | acceleration |
| What is deceleration? | Negative acceleration |
| Describe the motion of a falling object, taking air resistance into consideration (EXAMPLE: a ball falling) | 1. As the ball starts to fall, the ball is gaining speed 2. After a while, the ball will reach its terminal velocity. At this point, the downward force is the same as the upward air resistance |
| What is a Moment? | A turning force |
| Describe the behavior of the moments when e.g. a see-saw is in equilibrium | In an equilibrium see-saw both moments are equal which means a resultant force of 0. Therefore the see-saw is in equilibrium. |
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