M3 Motion Flashcards
Define speed
How fast something is moving, regardless of direction
Define displacement
How far an object has travelled from its starting point in a given direction
Define velocity
The rate of change of an object’s displacement
Define acceleration
The rate of change of an object’s velocity
Define free fall
The only force acting on an object is gravity
Define thinking distance
The distance the vehicle travels during the driver’s reaction time
Define reaction time
The time between seeing a hazard and the applying the brakes
Define braking distance
The distance the vehicle travels after the brakes are applied until it comes to a complete stop
What two things affect thinking distance?
How fast you are going.
How quickly you respond to.
What can affect reaction time?
Tiredness, illness, drugs, alcohol, lack of concentration
What three factors affect braking distance?
How fast you are going.
The mass of the car.
How well the brakes are working.
