VADETS Module 4 Test - Questions and Answers

VADETS Module 4 Test - Questions and Answers The natural force that constantly pulls all things to the Earth and affects an object's weight. Gravity A point where the mass of a vehicle is concentrated and balanced. The HIGHER it is, the more unstable the vehicle becomes. The LOWER it is, the more stable the vehicle and the chances are less likely for the vehicle to roll. Center of gravity More = unstable Less = stable The resistance that one surface or object encounters when moving over another. It is needed for traction between the tires and the road. Friction The grip of a tire on a road. Whether driving a small go-kart or a heavy truck, _____________ is necessary to move forward. Traction Also known as the Law of Motion- When objects in motion ten to stay in motion with the same speed and the same direction unless acted upon by an unbalanced force. Inertia A car and a truck are both traveling at 50 mph, which vehicle has more momentum? the truck ___________________ refers to the amount of motion an object has. The more mass and more velocity, the more of it. Momentum _________________ is the energy an object has based on position, rather than motion. Potential energy __________________ is the energy an object possesses due to its motion and its mass. Kinetic energy What is an impulse? A change in momentum Force of Impact: The force between a vehicle and an opposing force. Time of Impact: The duration of the timespan over which the force of contact was applied. _______________________ is compromised by the constantly changing weight on the tire patches. Vehicle balance ____________________ describes the transfer of vehicle weight forward or backward. Pitch ______________________ describes the transfer of the vehicle's weight when the rear-end swings to the right, to the left, or back and forth. Yaw _______________ describes vehicle balance from side to side. Roll The _____________ a vehicle's center of gravity, the more UNSTABLE the vehicle becomes. Higher The ______________ a vehicle's center of gravity, the more STABLE the vehicle becomes. Lower ___________________ are points used to help determine where the vehicle is in relation to the road and other vehicles. Reference points What lane position is used most for driving? 1 Which lane position is used for making a right turn or parking? 3 How do you know when you are parked 6 inches from the front line or curb? When the curb line extends beyond the right side passenger mirror. How do you know when you are parked with rear limitation? (6 inches from the curb or line in the rear) You can see the curb line extend through the back of the right rear passenger window. What braking technique slows the vehicle as quickly as possible without locking brakes or losing traction? Threshold braking