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Motion
IGCSE velocity and acceleration
| Question | Answer |
|---|---|
| Units of velocity are | Metres per second, m/s |
| Units of acceleration are | Metres per second squared |
| The difference between speed and velocity is | Velocity has a direction. |
| Average speed equals | Distance travelled divided by time taken |
| Acceleration equals | Change in velocity divided by time taken |
| Gradient of distance time graph is | Velocity |
| Gradient of velocity time graph is | Acceleration |
| Area under velocity time graph is | Distance travelled |
| The Moon travels at constant speed but it is accelerating because | Its direction changes |
| If it takes 4 seconds to accelerate from 12 m/s to 20 m/s the acceleration is | 2 metres per second squared |