2. Motion Change of position in respect to a reference point

3. Are you moving right now? 1.Yes 2.No

4. The whole galaxy rotates at 490,000 mph The earth ROTATES around its axis each day at 1,000 mph

5. Frames of Reference Particular perspective from which an event in the universe is observed

6. Example A woman on a moving truck throws a ball straight up in the air and the man next to her observes the flight path. Meanwhile, another man from the side of the road observes the same ball and is asked to describe the flight of the ball.

7. Speed Rate of change of position s = d t Three types: instantaneous, constant, average speed speed distance time

8. Instantaneous Speed Rate of motion at any given moment Ex/ speedometer, radar gun

9. This police officer finds “instantaneous speed!”

10. Constant Speed Speed that does not change or vary Ex/ setting cruise control on car

11. Average Speed Avg. speed = total distance traveled total time

12. Speed Trap 1909 Before the development of more advanced technology, police officers relied on the use of a simple stopwatch to time the passage of a car between two known and fixed positions. A 'speed trap' was set up by two policemen who began by carefully measuring a section of road and setting up two observations positions. One officer was placed at each end of the trap. As a car passed the first officer he made a signal (raised his hand etc.) and the second started his stopwatch. When the car passed the second fixed point, the other officer pressed the button to stop the watch - and had a measurement of the time taken to travel a known distance. The speed of the car could now be calculated (or found by referring to a book of tables). As cars travelled relatively slowly (perhaps 15-20 mph), the officer had time to step out and stop the car!

13. What type of speed is this showing? 1.Average speed 2.Constant speed 3.Instantaneous speed 4.Acceleration

14. 4-Step Method for Solving Equations Define variables Choose Equation Rearrange equation (if necessary) Plug into equation and solve

15. Example A car leaves WHS and travels 10.3 km to Baker Park. It takes.15 hr to get there. What is the average speed?

16. Rearranging Equation How FAR did a horse run if her pace was 7m/s for 30s? (assume constant speed)

17. HOW FAST IS FAST FALCON VIDEO SMART BOARD