AQA A Level Physics復習筆記4.6.1 Work & Power
Work & Power Work is defined as The amount of energy transferred when an external force causes an object to move over a certain distance If the force is parallel to the direction of the ...
AQA A Level Physics復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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...
2024-25年美國高中申請條件、要求、時間及流程匯總！
近幾年，低齡留學越來越熱，為了給以后上國外名校鋪路，許多家長會將孩子送去國外上高中，甚至有些小學、初中都在國外讀。而美國、加拿大、英國這些教育強國則是他們的首選國家。那么讀美國高中，孩子需要具備什...
AQA A Level Physics復習筆記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復習筆記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復習筆記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...
