Gravity How will gravity affect your speed going uphill? Lose
speed to keep same speed you must accelerate to overcome
gravity
Slide 4
Gravity How will gravity affect your speed going downhill?
Speed will increase Take longer to stop Must brake sooner Look
further ahead for hazards
Slide 5
Review Gravity
Slide 6
The Law of Gravity and Hill Parking
Slide 7
Wheels to right Shift to neutral Roll into curb Shift to Park
Set Parking Brake Wheels to right Shift to neutral Roll into curb
Shift to Park Set Parking Brake What are the steps? Downhill with
curb When you are parked on an incline, gravity works to pull your
vehicle downhill. To keep your vehicle from rolling, leave your
vehicle in low gear or park.
Slide 8
What are the steps? Downhill with curb Wheels to right Shift to
neutral Roll into curb Shift to Park Set Parking Brake Wheels to
right Shift to neutral Roll into curb Shift to Park Set Parking
Brake
Slide 9
Youll be parking downhill with no curb. Which way will you turn
the wheel? TO THE RIGHT What step do you skip? Yes, there is no
curb to roll into.
Slide 10
TO THE RIGHT Will you put it into neutral and roll? Again,
there is no curb to stop us. You are already parked uphill without
a curb, which way are your wheels turned?
Slide 11
Center of Gravity What is it? The point around which an objects
weight is evenly distributed Check out pictures on page 92 and 93
in your textbook.
Slide 12
Inflation & Traction Check out pictures on page 94 & 95
It is important to have properly inflated tires because You will
have Poor Traction Under-inflation (tire not filled up properly)
outside edges will touch ground and will wear out faster
Over-inflation (tire filled up too much) only center part of tire
is touching ground and will wear out faster
Slide 13
Total Stopping Distance pictures on page 98 & 99 TSD =
Distance your car travels while you make a stop
Slide 14
3 Parts to total stopping distance 1. Perception time &
distance 2. Reaction time & distance 3. Braking distance
Slide 15
Factors affecting braking distance 1. speed 2. vehicle
condition 3. roadway surface 4. driver ability 5. antilock braking
system 6. hills 7. load (amount of weight in vehicle)
Slide 16
Three factors that determine the force of impact 1.SPEED
example? 2.WEIGHT example? 3. DISTANCE BETWEEN IMPACT &
STOPPING example?
Slide 17
Seat Belts Three collisions occur when a vehicle hits a solid
object. 1. Vehicle hits object & stops 2. Occupants either hit
inside vehicle or restraint devices 3. Occupants may suffer
internal collisions when organs impact inside their bodies