CIE A Level Physics复习笔记2.1.9 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 terms to know, ...
CIE A Level Physics复习笔记2.1.8 Acceleration of Free Fall Experiment
Acceleration of Free Fall Experiment A common experiment to determine acceleration of a falling object which can be carried out in the lab Apparatus Metre rule, ball bearing, electromagnet, electro...
CIE A Level Physics复习笔记2.1.7 Solving Problems with Kinematic Equations
Solving Problems with Kinematic Equations Step 1: Write out the variables that are given in the question, both known and unknown, and use the context of the question to deduce any quantities that a...
CIE A Level Physics复习笔记2.1.6 Deriving Kinematic Equations
Deriving Kinematic Equations of Motion The kinematic equations of motion are a set of four equations which can describe any object moving with constant acceleration They relate the five variables: ...
CIE A Level Physics复习笔记2.1.5 Gradient of a Velocity-Time Graph
Gradient of a Velocity-Time Graph Acceleration is any change in the velocity of an object in a given time As velocity is a vector quantity, this means that if the speed of an object changes, or its...
CIE A Level Physics复习笔记2.1.4 Gradient of a Displacement-Time Graph
Gradient of a Displacement-Time Graph Displacement-time graphs show the changing position of an object in motion They also show whether an object is moving forwards (positive displacement) or backw...
CIE A Level Physics复习笔记2.1.3 Area under a Velocity-Time Graph
Area under a Velocity-Time Graph Velocity-time graphs show the speed and direction of an object in motion over a specific period of time The area under a velocity-time graph is equal to the displac...
CIE A Level Physics复习笔记2.1.2 Motion Graphs
Motion Graphs Three types of graph that can represent motion are displacement-time graphs, velocity-time graphs and acceleration-time graphs On a displacement-time graph… slope equals velocity the ...
CIE A Level Physics复习笔记2.1.1 Displacement, Velocity & Acceleration
Defining Displacement, Velocity & Acceleration Scalar quantities Remember scalar quantities only have a magnitude (size) Distance: the total length between two points Speed: the total distance ...
CIE A Level Physics复习笔记1.2.3 Measurement Techniques
Measurement Techniques Common instruments used in Physics are: Metre rules - to measure distance and length Balances - to measure mass Protractors - to measure angles Stopwatches - to measure time ...
CIE A Level Physics复习笔记1.2.2 Calculating Uncertainties
Calculating Uncertainty There is always a degree of uncertainty when measurements are taken; the uncertainty can be thought of as the difference between the actual reading taken (caused by the equi...
2022软科世界大学学术排名最新发布！
近日，“2022软科世界大学学术排名”最新发布，排名展示了全球领先的1000所研究型大学。 中国内地共有163所大学上榜，其中8所位列世界百强，比去年增加1所。清华大学表现最佳，排名全球第26，较去年上升2名；北京大...
