P10 Flashcards
What is the calculation to work out force in terms of acceleration
Force=massXacceleration
What is the equation for acceleration with force and mass
Acceleration=force/mass
What is the difference between mass and weight
Weight=the force acting on an object due to gravity measured in newtons,mass=the quantity of matter in an object measured in kilos
Equation for weight in terms of acceleration
Weight=massXacceleration due to gravity
What is meant by braking distance
The distance taken to stop once the brakes are applied
What does thinking distance mean
The distance travelled in between the driver realising he needs to brake and actually braking
What is the calculation for braking force with velocity and displacement
A=v2-u2/2XS…V=final velocity,u=initial velocity,s=displacement
Calculation for momentum
Momentum=massxvelocity
What is the equation for force in terms of momentum and time
Force=change in momentum/time
What is an elastic object
An object that regains its shape when the forces deforming it are removed
What is hookes law
The extension of a spring is proportional to the force applied providing it’s limit of proportionality is not exceeded
Calculation for force applied with spring constant and extension
Force applied=spring constantX extension
What external features effect braking distance
Conditions of road,Speed of car,Mass of car,how worn out tyres and breaks are
