Language of Proof What is proof? Proof is a series of logical steps which show whether a result is?true?or not for a set of specified numbers e.g. All intigers, all even numbers etc Notation...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.4.1 Moments The Moment of a Force As well as causing objects to speed up, slow down, change direction and deform, forces can also cause objects to?rotate An ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.3.4 Momentum & Safety Features Momentum & Safety Features Since force is equal to the rate of change in momentum, the force of an impact in a vehicle...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.3.3 Newton's Third Law Newton's Third Law Newton's?third law of motion?states: Whenever two bodies interact, the forces they exert on each other are e...
Tilting What does it mean if a rod is on the point of tilting? A rod will?tilt?(rotate) about a?pivot?if the?resultant moment?about that pivot is?non-zero Examples of tilting: A person walki...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.3.2 Forces & Momentum Forces & Momentum When a force acts on an object that is moving, or able to move, the object will accelerate (or decelerate) Th...
Uniform Rods & Laminae What is meant by the centre of mass of an object? The centre of mass of an object is?the point at which the weight of the object may be considered to act For a?uni...
Using Moments - Equilibrium What happens with moments if a rigid body is in equilibrium? If a rigid body is in?equilibrium?then: The?resultant force?is 0 N The?resultant moment?about?any poi...
Introduction to Derivatives Before introducing a?derivative, an understanding of a?limit?is helpful What is a limit? What might I be asked about limits? You may be asked to use your GDC to plot the...
