# Shared Flashcard Set

## Details

IB Physics SL Topic 2
Assessment Statements
10
Physics
05/10/2011

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 velocityImpulse: 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
 2.3.9 Define power.
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 acircle is directed towards the centre ofthe circle.
Definition
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