1. Things That Go… …Fast Straight Line Motion

2. Revision Equations of motion: Equations of motion:

3. Symbols s = displacement (m) s = displacement (m) t = Time (sec) t = Time (sec) u = initial Velocity (ms -1 ) u = initial Velocity (ms -1 ) v = final Velocity (ms -1 ) v = final Velocity (ms -1 ) a = acceleration (ms -2 ) a = acceleration (ms -2 )

4. Question A truck is Cruising along at 27ms -1. A vehicle pulls out in front of him and he hits the brakes. The truck decelerates at a constant -8.5ms -2 for 2.3 seconds. What is the ‘new’ velocity of the truck?

5. Drag Racing

6. Drag Racing Question Two drag cars are competing in a quarter mile race (400m). Lightning Rod accelerates constantly at 17.8ms -2. Thunder bolt finishes the race with a velocity of 104ms -1. Which car wins the race, assuming both cars start at the same time?

7. Bugatti Veyron Anyone???

8. Bugatti’s Velocity Apparently The Bugatti Veyron can accelerate from 150kmh -1 to 280kmh -1 in just 6 seconds. Apparently The Bugatti Veyron can accelerate from 150kmh -1 to 280kmh -1 in just 6 seconds. What is the rate of acceleration? What is the rate of acceleration? How long would it take to accelerate to 400kmh -1 at the same rate? How long would it take to accelerate to 400kmh -1 at the same rate? What stopping distance is required if the Bugatti decelerates at a rate of -16ms -2 ? What stopping distance is required if the Bugatti decelerates at a rate of -16ms -2 ?

9. Rockets

10. Rocket Question A rocket is launched vertically from the edge of a cliff (600m above sea level). The acceleration upward is constant at 37ms -1 for 29 seconds. A rocket is launched vertically from the edge of a cliff (600m above sea level). The acceleration upward is constant at 37ms -1 for 29 seconds. How high does the rocket get above sea level? How high does the rocket get above sea level? How long does it take for the rocket to fall to the ocean? (advanced question) How long does it take for the rocket to fall to the ocean? (advanced question)

11. Question time… Work on the question sheet from last lesson. Work on the question sheet from last lesson.