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### 45 Cards in this Set

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• Back
 Can oil, dirt and water reduce traction? YES! Force that resists th motion of one surface against another (Applying brakes) FRICTION A vehicle with a high center of gravity is easier to drive than a low center of gravity.(T of F) FALSE Perception time is reduced by limited visibility. TRUE The sharper the curve, the more _________. Centrifugal force. Stopping on a downgrade is more difficult than stopping on a flat surface. TRUE An increase in spedd also increases a vehicle's energy of motion. TRUE If a car traveling 40 mph weighs the same as a car driving tim mph, its energy of motion is ______ times greater. TWO When turining, gravity and friction must be strong enough to overcome ________. Centrifugal force. The space it takes your car to stop once you have identified a hazard is _____. reaction time. The distance your car travels from the time yuo hit the brake until the car stops Braking distance The faster the car is moving, the greater its ___________. energy of motion Perception + reaction + braking dist = total stopping distance Middle of road is higer than sides. Crowned road Keeps you behind wheel in emergency Reduces force on passengers in collision Seatbelt Airbags Perception time varies according to and drivers, _____, _____ and _________. attentiveness physical condition expirience Inertia tendency of vehicle to continue at same speed in a straight line unless acted upon Gravity causes vehical to become faster downhill Energy of motion energy moving vehicle carries Traction friction between tire and road Momentum product of weight and speed Banked road higher on edges Directional Control ability of vehicle to hold straight line If you begin to skid, you are helpless. FALSE Underinflated tires grip the road _____________. on only the outer edges The tread of a tire should be _________. min of 1/16 on and inch Driving on a bouncy road with potholes makes traction worse. TRUE If vehicle weight doubles, momentum doubles. TRUE A vehicles center of gravity needs to be low to _________. be safe A yellow diamond with a cow means __________. Livestock could enter the road Can oil, dirt and water reduce traction? YES! Force that resists th motion of one surface against another (Applying brakes) FRICTION A vehicle with a high center of gravity is easier to drive than a low center of gravity.(T of F) FALSE Perception time is reduced by limited visibility. TRUE The sharper the curve, the more _________. Centrifugal force. Stopping on a downgrade is more difficult than stopping on a flat surface. TRUE An increase in spedd also increases a vehicle's energy of motion. TRUE If a car traveling 40 mph weighs the same as a car driving tim mph, its energy of motion is ______ times greater. TWO When turining, gravity and friction must be strong enough to overcome ________. Centrifugal force. The space it takes your car to stop once you have identified a hazard is _____. reaction time. The distance your car travels from the time yuo hit the brake until the car stops Braking distance The faster the car is moving, the greater its ___________. energy of motion Perception + reaction + braking dist = total stopping distance Middle of road is higer than sides. Crowned road Keeps you behind wheel in emergency Reduces force on passengers in collision Seatbelt Airbags