Memory Anchor:

• Which make for safer roads: GATSO or SPECS speed cameras?
• http://www.speedcamerasuk.com/gatso.htm
• http://www.speedcamerasuk.com/specs.htm
Calculate the average speed of some objects.
• G5: rearrange equations

Super Challenge:

Stretch:

Challenge:

Key Questions:

1. What is speed? What happens if we travel faster?
   • Speed is how far and object travels in a bit of time. To travel fast is to cover more distance in the same time, or the same distance in less time.
2. What is the equation we use to calculate speed?
   • The average speed for a journey is the distance traveled ÷ total time.
3. What does the speed calculation tell you about your journey?
   • This is the average speed as you may have changed speed during the journey.
4. What do we call the speed at a given moment in time?
   • The speed and any one moment in time is called the instantaneous speed.
5. What makes roads safer?
   • Find out here: http://www.speedcamerasuk.com/gatso.htm http://www.speedcamerasuk.com/specs.htm
6. What is the relationship between distance, speed and time?
   • speed and the quantitative relationship between average speed, distance and time (speed = distance ÷ time)
7. What are the units for distance and time?
   • The SI unit for distance is metres (m). The SI unit for time is seconds (s).
8. What unit do we measure speed in?
   • The SI unit for speed is metres per second (m/s).
9. How do you calculate the average speed of an object?
   • The average speed of an object is calculating by using the overall distance divided by the overall time taken to move this distance.