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Speed and Velocity
| Question | Answer |
|---|---|
| Define speed | Distance over time (how far something travels over a period of time) |
| How is velocity different than speed? | It contains a direction (north, south, east, west, upwards, etc.) |
| You will need to calculate speed when given a formula. Here is an example: A runner completes a 100 meter dash in 10 seconds. What is their average speed? s=d/t | 10 m/s |
| You will need to calculate speed when given a formula. Here is an example: A train travels at a constant speed of 80 km/h for 3 hours. What total distance does the train cover? s=d/t | 240 km |
| You will need to calculate speed when given a formula. Here is an example: If a cyclist maintains a constant speed of 12 m/s, how long will it take them to travel 60 meters? s=d/t | 5 s |
| You will need to calculate speed when given a formula. Here is an example: A car travels a distance of 150 km in 2.5 hours. What is the average speed of the car in km/h? s=d/t | 60 km/hr |
| You will need to calculate speed when given a formula. Here is an example: A peregrine falcon dives at a constant speed of 90 m/s. How far does it travel in 4 seconds? s=d/t | 360 m |
| You will need to calculate speed when given a formula. Here is an example: A boat travels 45 km at a constant speed of 15 km/h. If it departs at 9:00 AM, what time does it arrive at its destination? s=d/t | 12:00 pm (noon) |
| You will need to calculate speed when given a formula. Here is an example: Two cars start from the same point at the same time and travel east. Car A travels at 60 km/h and Car B travels at 80 km/h. How far apart are the two cars after 2.5 hours? s=d/t | 50 km |
| When an object changes direction is it changing speed or velocity? | Velocity |