1 / 39

CHAPTER 5

CHAPTER 5. NATURAL LAWS AND CAR CONTROL. CHAPTER 5. NATURAL LAWS AND CAR CONTROL 5.1 GRAVITY AND ENERGY OF MOTION 5.2 FRICTION AND TRACTION 5.3 STOPPING DISTANCE 5.4 CONTROLLING FORCE OF IMPACT. GRAVITY : THE FORCE THAT PULLS ALL THINGS TO EARTH. DRIVING UPHILL: LOSE SPEED

karan
Download Presentation

CHAPTER 5

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CHAPTER 5 NATURAL LAWS AND CAR CONTROL

  2. CHAPTER 5 NATURAL LAWS AND CAR CONTROL 5.1GRAVITY AND ENERGY OF MOTION 5.2 FRICTION AND TRACTION 5.3 STOPPING DISTANCE 5.4 CONTROLLING FORCE OF IMPACT

  3. GRAVITY : THE FORCE THAT PULLS ALL THINGS TO EARTH

  4. DRIVING UPHILL: • LOSE SPEED • INCREASE POWER TO OVERCOME GRAVITY

  5. DRIVING DOWNHILL: • GRAVITY INCREASES SPEED • TAKES LONGER TO STOP • SHIFT TO A LOWER GEAR TO HAVE ENGINE HELP SLOW VEHICLE

  6. CENETR OF GRAVITY: THE POINT AROUND WHICH AN OBJECTS WEIGHT IS EVENLY DISTRIBUTED.

  7. LOW CENTER OF GRAVITY=MORE STABLE

  8. High Center of Gravity = Less Stable!

  9. A.K.A. Kinetic energy ENERGY OF MOTION THE FORCE THAT CAUSES OBJECTS TO MOVE.

  10. Weight WEIGHT: ENERGY OF MOTION DOUBLES WHEN AN OBJECTS WEIGHT IS DOUBLED. WHEN IT WEIGHS TWICE AS MUCH IT NEEDS TWICE THE DISTANCE TO STOP

  11. CHAPTER 5 SPEED: A CAR’S ENERGY OF MOTION WILL CHANGE IN PROPORTION TO THE SQUARE OF IT’S CHANGE IN SPEED. EXAMPLE: SPEED GOES FROM 20-40 MPH (IT HAS MULTIPLIED 2X) 2 SQUARED IS 4 SO………….. IT WILL NEED FOUR TIMES THE DISTANCE TO STOP!

  12. CHAPTER 5 SO ………. IF A CAR SPEEDS UP FROM 20MPH TO 60MPH HOW MUCH HAS THE STOPPING DISTANCE INCREASED? ANSWER: 9 TIMES

  13. CHAPTER 5 FRICTION: THE FORCE THAT KEEPS EACH TIRE FROM SLIDING ON THE ROAD TRACTION: IS CAUSED BY FRICTION SO THAT THE TIRES GRIP THE ROAD

  14. TIRE TREAD: • GROOVED SURFACES OF THE TIRE THAT GRIP THE ROAD

  15. DIFFERENT TREADS Off Road Mud! Racing High Speed/Water

  16. WORN TREAD = BLOWOUT!

  17. CHAPTER 5 INFLATION AND TRACTION: UNDERINFLATION OVERINFLATION

  18. CHECKING TIRE TREAD IF YOU CAN SEE ALL OF LINCOLN’S HEAD, SWITCH THE TIRE

  19. Total Stopping Distance The time it takes your brakes to stop your car Oh No There’s a deer!!!!!! The time it takes to move your foot to the brake Perception distance Reaction distance Braking distance

  20. CHAPTER 5 TOTAL STOPPING DISTANCE= PERCEPTION TIME + REACTION TIME + BRAKING DISTANCE

  21. FACTORS TO CONSIDER SPEED SHARPNESS OF CURVE BANKED CURVES LOAD VEHICLE CONTROL IN CURVES

  22. ENTERING A CURVE • CAR WANTS TO GO STRAIGHT • THE FASTER YOU GO THE MORE IT WANTS TO GO STRAIGHT!

  23. Factors That Effect Braking Distance • Distance • Speed • Vehicle Condition • Roadway surface • Driver Ability • Antilock Brakes • Hills • Loads

  24. FORCE OF IMPACT FACTORS SPEED WEIGHT DISTANCE BETWEEN IMPACT AND STOPPING

  25. CHAPTER 5 SAFETY BELTS ACTIVE RESTRAINTS

  26. PASSIVE RESTRAINTS • AIR BAGS • ATOMATICALLY DEPLOY WHEN A COLLISION OCCURS

  27. Side Air Bags

  28. HOW TO WEAR YOUR SEATBELT Comfortable Low and snug across hips Shoulder belt should be snug across chest

  29. AIRBAG DISTANCE MUST HAVE 10 INCHES BETWEEN YOUR CHEST AND THE AIRBAGIN THE STEERING WHEEL WHY?

  30. HAND POSITION WITH AIRBAG AND HERE HERE WHY?

  31. AIRBAG SWITCHES AIRBAGS ARE MADE FOR ADULTS IF A CHILD IS IN THE FRONT SEAT THE AIRBAG MUST BE TURNED OFF

  32. OTHER SAFETY PROTECTION DEVICES FRONT AND REAR CRASH AREAS ENERGY ABSORBING BUMPERS REINFORCED WINDSHIELD

  33. HEAD RESTRAINTS

  34. CHILD SEATS

  35. ENERGY ABSORBING STEERING WHEEL AND COLUMN

  36. SIDE DOOR BEAMS

  37. AUTOMATIC SEATBELTS

  38. PADDED DASH

More Related