AQA A Level Physics復(fù)習(xí)筆記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復(fù)習(xí)筆記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...
AQA A Level Physics復(fù)習(xí)筆記4.3.3 SUVAT Equations
SUVAT Equations The SUVAT equations are the equations of motion used for objects in constant acceleration They contain the following variables: s??= displacement (m) u?= initial velocity (m ...
AQA A Level Physics復(fù)習(xí)筆記4.3.2 Motion Graphs
Motion Graphs Gradients The gradient of a?displacement-time graph is the?velocity The gradient of a?velocity-time graph is the?acceleration Area Under the Graph The area under a?velocity-time graph...
AQA A Level Physics復(fù)習(xí)筆記4.3.1 Motion Along a Straight Line
Displacement, Speed, Velocity & Acceleration Scalar quantities Scalar quantities only have a magnitude (size) Distance:?the total length between two points Speed:?the total distance trav...
AQA A Level Physics復(fù)習(xí)筆記4.2.3 Centre of Mass
Centre of Mass The centre of mass of an object is?the point at which the weight of the object may be considered to act The position of the centre of mass of uniform regular solid is at its c...
AQA A Level Physics復(fù)習(xí)筆記4.2.2 Couples
Couples A couple is a?pair?of equal and opposite?coplanar forces?that acts to produce?rotation?only A couple consists of a pair of forces that are: Equal in magnitude Opposite in direction P...
AQA A Level Physics復(fù)習(xí)筆記4.2.1 Moments
What is a Moment? A moment is the?turning effect of a force Moments occur when forces cause objects to?rotate?about some pivot The moment of a force is given by Moment (N m) = Force (N) × pe...
美本申請(qǐng)十大誤區(qū)，你誤入了嗎？
現(xiàn)在關(guān)于留學(xué)申請(qǐng)的內(nèi)容越來越多，但也不乏很多“誤導(dǎo)性”觀點(diǎn)。在多關(guān)注資訊的同時(shí)一定要避免踩坑。 十大誤區(qū) 1美本規(guī)劃，從11年級(jí)開始就行 很多家長(zhǎng)，即使孩子在初中升高中時(shí)，就已經(jīng)決定了出國(guó)留學(xué)。但她們?nèi)匀?..
