IB DP Physics: HL复习笔记2.1.3 Acceleration
Acceleration Acceleration?is defined as the?rate of change of velocity In other words, it describes how much an object's velocity?changes?every?second The equation below is used to calculate the av...
IB DP Physics: HL复习笔记2.1.2 Speed & Velocity
Speed & Velocity Speed The?speed?of an object is the distance it travels every second Speed is a?scalar?quantity This is because it only contains a magnitude (without a direction) The?average s...
IB DP Physics: HL复习笔记2.1.1 Distance & Displacement
Distance & Displacement Distance?is a measure of how far an object travels It is a?scalar quantity - in other words, the direction is not important The athletes run a total distance of 300 m Co...
IB DP Physics: HL复习笔记1.3.3 Solving Vector Problems
Solving Vector Problems In physics, vectors appear in many different topic areas Specifically, vectors are often?combined?and?resolved?to solve problems when considering motion, forces, and momentu...
IB DP Physics: HL复习笔记1.3.2 Combining & Resolving Vectors
Combining & Resolving Vectors Vectors?are represented by an arrow The?arrowhead?indicates the?direction?of the vector The?length?of the arrow represents the?magnitude Combining Vectors Vectors ...
IB DP Physics: HL复习笔记1.3.1 Vector & Scalar Quantities
Vector & Scalar 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 a hike in ...
IB DP Physics: HL复习笔记1.2.3 Determining Uncertainties from Graphs
Error Bars The uncertainty in a measurement can be shown on a graph as an?error bar This bar is drawn above and below the point (or from side to side) and shows the?uncertainty?in that measurement ...
IB DP Physics: HL复习笔记1.2.2 Calculating Uncertainties
Uncertainties Precision Precise measurements are ones in which there is?very little spread?about the?mean?value, in other words,?how close?the measured values are?to each other If a measurement is ...
IB DP Physics: HL复习笔记1.2.1 Random & Systematic Errors
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 as t...
