Term
2.1.1 Define displacement, velocity, speed and acceleration. 

Definition
displacement: the distance moved from a specified origin in a specific direction (vector) velocity: the rate of change of displacement (vector) speed: the rate of change of distance (scalar) acceleration: the rate of change of velocity (vector) 


Term
2.2.4 State Newton’s first law of motion. 

Definition
An object continues in uniform motion in a straight line or stays at rest unless external forces interfere. 


Term
2.2.6 State the condition for translational equilibrium. 

Definition
The resultant force acting on an object is zero. 


Term
2.2.8 State Newton’s second law of motion. 

Definition
The resultant force is proportional to the rate of change of momentum. If mass stays constant, the resultant force is proportional to the acceleration. 


Term
2.2.10 Define linear momentum and impulse. 

Definition
Linear momentum: the product of mass and velocity Impulse: the change in momentum at an instant 


Term
2.2.12 State the law of conservation of linear momentum. 

Definition
The total linear momentum of a system remains constant provided that there is no external resultant force. 


Term
2.2.14 State Newton’s third law of motion. 

Definition
When two bodies interact, they always exert equal and opposite forces onto each other. 


Term
2.3.6 State the principle of conservation of energy. 

Definition
Energy is neither created nor destroyed, it only changes form. 


Term

Definition
The rate at which energy is transferred. 


Term
2.4.1 Draw a vector diagram to illustrate that the acceleration of a particle moving with constant speed in a circle is directed towards the centre of the circle. 

Definition

