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...
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: ...
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...
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...
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...
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?...
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 ...
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 ...
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...
近日，“2022軟科世界大學(xué)學(xué)術(shù)排名”最新發(fā)布，排名展示了全球領(lǐng)先的1000所研究型大學(xué)。 中國內(nèi)地共有163所大學(xué)上榜，其中8所位列世界百強，比去年增加1所。清華大學(xué)表現(xiàn)最佳，排名全球第26，較去年上升2名；北京大...
Random & Systematic Errors Measurements of quantities are made with the aim of finding the?true value?of that quantity In reality, it is impossible to obtain the true value of any quantity, the...
What are Scalar & Vector Quantities? A?scalar?is a?quantity?which?only?has a magnitude (size) A?vector?is a quantity which has?both?a magnitude and a direction For example, if a person goes on ...
