AQA A Level Physics复习笔记4.5.2 Conservation of Momentum
The Principle of Conservation of Momentum The principle of conservation of linear momentum states: The total momentum before a collision = the total momentum after a collision provided no ex...
AQA A Level Physics复习笔记4.5.1 Linear Momentum
Linear Momentum Linear momentum (p) is defined as the product of mass and velocity Momentum is the product of mass and velocity Momentum is a vector quantity - it has both a magnitude...
AQA A Level Physics复习笔记4.4.3 Newton's Third Law
Newton's Third Law Newton's Third Law states: If body A exerts a force on body B, then body B will exert a force on body A of equal magnitude but in the opposite direction This means that ev...
AQA A Level Physics复习笔记4.4.2 Newton's Second Law
Newton's Second Law Newton's Second Law states that: The resultant force on an object is equal to its rate of change in momentum. This change in momentum is in the same direction as the resu...
AQA A Level Physics复习笔记4.4.1 Newton’s First Law
Newton's First Law Newton's First Law states: A body will remain at rest or move with constant velocity unless acted on by a resultant force If the forces on a body are balanced (the resulta...
AQA A Level Physics复习笔记4.3.7 Required Practical: Determination of g
Required Practical: Determination of g Aims of the Experiment The overall aim of the experiment is to calculate the value of the acceleration due to gravity, g This is done by measuring the ...
AQA A Level Physics复习笔记4.3.6 Terminal Velocity
Terminal Velocity For a body in free fall, the only force acting is its weight and its acceleration g is only due to gravity. The drag force increases as the body accelerates This increase i...
AQA A Level Physics复习笔记4.3.5 Drag Forces
Drag Forces Drag forces are forces that oppose the motion of an object moving through a fluid (gas or liquid) Examples of drag forces are friction and air resistance Drags forces: Are always...
AQA A Level Physics复习笔记4.3.4 Projectile Motion
Projectile Motion The trajectory of an object undergoing projectile motion consists of a vertical component and a horizontal component These need to be evaluated separately Some key t...
