Force and Motion Flashcards
what is stopping distance
The distance taken for you to see a hazard, to think about how to react and to stop your vehicle
stopping distance comprises what
thinking distance and braking distance
what is thinking distance
The time taken and the distance travelled when you react to a hazard
what is braking distance
The time taken for your brakes to stop you
what factors affect thinking distance
drugs and alcohol, attention, cognitive function, how tired you are, speed, age
what factors affect braking distance
size/quality of brakes, speed, road surface, mass, quality of tyres, grips
what are scalars
quantities which only have a size/magnitude
what are vectors
quantities which have magnitude and direction
List seven scalars
distance, speed, density, energy, area, change, time
List seven vectors
displacement, velocity, acceleration, momentum, force, current, moment
what are the applied forces
push and pull
in what direction does frictional force act
in the opposite direction to the motion
masses attract other masses due to what force
gravitational force
at what angle does normal reaction force act when an object rests on a solid
90°
what is normal reaction force to the force of the object pushing on the surface
equal and opposite
