6072864
Description
Flashcards by Mel Hughes, updated more than 1 year ago
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Created by Mel Hughes
over 9 years ago
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| Question | Answer |
| What is the SI unit of distance? | Metres, m |
| What is the speed of a runner who covers 400m in 50s? | /8m/s |
| What is the difference between using speed and velocity? | Velocity is speed in a particular direction |
| What is the SI unit of acceleration? | metres per second squared, m/s2 |
| What does a horizontal line on a velocity-time graph represent? | Constant velocity, zero acceleration |
| What would the velocity-time graph for a steadily decelerating object look like? | A straight line with a negative gradient |
| What does an upwardly curving line represent on a distance time graph? | Increasing velocity |
| What does an upwardly curving line represent on a velocity time graph? | Increasing acceleration |
| What is the average speed, in m/s, of a car that completes a distance of 1.2km in 1 minute? | 20m/s |
| What does the distance time graph for a stationary object look like? | Straight horizontal line |
| What quantity has the unit m/s2? | Acceleration |
| What does a negative value for acceleration mean? | A deceleration |
| What happens to the gradient of the line on a distance time graph if the speed increases? | The gradient increases |
| How can an object travelling at a steady speed be accelerating? | By changing it's direction |
| A car accelerates from rest to a speed of 40m/s in 10s. What is it's acceleration? | 4m/s2 |
| What part of a velocity time graph represents distance travelled? | Area between the line and the x-axis |
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