AQA A Level Physics复习笔记4.5.5 Collisions
Elastic & Inelastic Collisions In both collisions and explosions, momentum is always conserved However, kinetic energy might not always be A collision (or explosion) is either: Elastic –...
AQA A Level Physics复习笔记4.5.4 Impulse on a Force-Time Graph
Impulse of a Force-Time Graph In real life, forces are often not constant and will vary over time If the force is plotted against time, the impulse is equal to the area under the force-time ...
AQA A Level Physics复习笔记4.5.3 Impulse
Force & Momentum Force is defined as the rate of change of momentum on a body The change in momentum is defined as the final momentum minus the initial momentum These can be expressed as...
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 ...
