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| Question | Answer |
| How can we tell from a distance-time graph if an object is stationary? | Stationary is a horizontal line. |
| How can we tell from a distance-time graph if an object is moving at constant speed? | Moving at constant speed in a straight line that slopes upwards. |
| What does the gradient of a distance-time graph tell us? | The gradient of a distance-time graph for an objects represents the object's speed. |
| How do we calculate the speed of an object? | Speed(m/s)= distance travelled in metres(m) ____________________________ Time taken in seconds(s) |
| What is the difference between speed and velocity? | Velocity is speed in a given direction. |
| What is acceleration and what is its unit? | Acceleration is change of velocity per second. The unit of acceleration is metre per second squared. |
| How can we calculate the acceleration of an object? | Acceleration= change of velocity ____________________ time taken |
| What is deceleration? | Deceleration is the change of velocity per seconds when an object slows down. |
| What can we say of a velocity-time graph is a horizontal line? | If a velocity-time graph is a horizontal line, the acceleration is zero. |
| What does the area under a velocity-time graph represent? | The area under the line on a velocity-time graph represents distance travelled. |
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