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| Question | Answer |
| What is the difference between speed and velocity? | Speed is how fast you are going (30mph) Velocity is speed but must have the direction specified (30mph north) |
| What is formula for speed? | |
| If a car travels 50m in 3.9s, what is its speed? | Speed = 50m / 3.9s = 12.8m/s |
| What does the gradient of a distance time graph tell us? | Speed |
| What is the formula for acceleration? | |
| What does line b tell us on this velocity-time graph? | b tells us that there is no acceleration |
| What types of forces are there? | - reaction - weight (gravitational) - upthrust - friction - drag - magnetic - electrostatic |
| What forces are at work here? | - push on the car by the man - friction opposing the motion - gravity on the car |
| What is force measured in? | Newtons |
| What is Hooke's law? | Extension is proportional to load (If you stretch something with a steady increasing force, then the length will increase steadily too) |
| What is the formula relating to mass, weight and gravity? | Weight = mass x gravity |
| What is the weight, in Newtons, of a 5kg mass both on Earth and on the Moon (gravity is 1.6N/kg)? | Earth = 5 x 10 = 50 Newtons Moon = 5 x 1.6 = 8 Newtons |
| What does the area under the graph tell me? | The distance travelled in that time interval |
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