ASUnit2

AS Unit 2 : PHYA2 : Mechanics, Materials and Waves This page supports the lessons for the second unit of the year 12 AS qualification:

The following links and videos will help to refresh the skills you will need during this unit: [|Rearranging Equations] [|Rearranging Formulae 1] [|Basic Trigonometry] ||  || 'A' level mindmap : Unit 2 Mindmap : Mechanics Mindmap : 10 rules for numerical problems : Course book : || Note HW handed out and the card sort used are above since they were logically part of the last lesson || YouTube Videos [|Bouncing Football] [|Freeze Frame parabolic motion] [|Bomb Dropping] || ||
 * **Lesson** || **Notes** || **Resources & Links** ||
 * 0 || **Prerequisites**
 * **1** || **Course Introduction** : Expectations, course structure, resources, WikiSpace. || Powerpoint : [[file:PhysAS_01_Introduction.ppt]]
 * **2** || **Density 1** : Introduction to density with a focus on HSW
 * To understand qualitatively the concept of density and how it affects us
 * To be able to successfully tackle density problems including alloys
 * To use density investigations as a vehicle for teaching //“How Science Works”// and //“the scientific method”// || [[file:Materials.pdf]][[file:AS_Unit2_02_Density.ppt]] [[file:Denisties Card Sort.doc]][[file:PastQuestion_01_Density.pdf]] ||
 * **3** || **Density 2** : Conceptual understanding of density. Floating and Sinking. Introduction of Micrometer and other practical skills.
 * To understand how density applies to some everyday situations
 * To look at floating and sinking with respect to density
 * To conduct a brief investigation into density || [[file:PhysAS_03_Density02.ppt]] ||
 * **4** || **Hooke's Law Practical**. HW : write up the practical
 * To investigate how a spring extends under increasing load
 * To plot a graph of load against extension
 * To begin to acquire ‘A’ level practical skills. || [[file:Physics_AS_Unit2_04_HookesLawPractical.ppt]][[file:WorkedExample_DensityPastPaper_Q6Jan2004.pdf]][[file:HookesLawQuestions.doc]] ||
 * **5** || **Hooke's Law 1** Introduction to Hooks Law with added emphasis on HSW
 * To understand what happens when an increasing force is applied to a wire or spring
 * To understand how springs in series and parallel behave
 * To understand how to calculate the energy stored in a stretched spring
 * Use this as a vehicle to check graph plotting
 * || [[file:Physics_AS_Unit2_05_HookesLaw01.ppt]] ||
 * **6** || **Young's Modulus**
 * To understand the keywords associated with the deformation of different types of solids
 * To be able to calculate stress, strain and hence Young’s modulus
 * To be able to describe and compare stress strain graphs || [[file:Physics_AS_Unit2_06_YoungsModulus.ppt]][[file:StressStrainYoungsModulus.doc]][[file:WorkedExamplesHookesLawQuestions.pdf]] ||
 * **7** || **Properties of Materials**
 * To understand that once the elastic limit has been exceeded, the force-extension graphs for loading and unloading are unequal
 * To know that such curves are called hysterisis curves.
 * To be able to describe such graphs for different materials
 * To describe the energy changes during loading/unloading || [[file:Physics_AS_Unit2_07_PropertiesMaterials.ppt]][[file:PastQuestion_0910_02YoungsModulus.pdf]][[file:WorkedAnswersStressStrainYoungsModulus.doc]] ||
 * **8** || **SUVAT 01 derivation of SUVAT Equations**
 * Starting with the motion equations met at GCSE & derive the 4 //“S.U.V.A.T.”// equations (Maths jiggery pokery)
 * To be able to solve problems using our new //“S.U.V.A.T.”// equations || [[file:Physics_AS_Unit2_08_SUVAT01.ppt]][[file:QuestionsEquationsOfMotion01.doc]][[file:EquationsOfMotion01WorkingsOut.pdf]][[file:Mechanics.pdf]][[file:PHYA2.pdf]] ||
 * **9** || **SUVAT 02 derivation from a v/t graph**
 * To revise distance/time and speed/time graphs if necessary.
 * To show a connection between the SUVAT equations & velocity/time graphs
 * To work through lots more examples of using the SUVAT equations
 * Khan Academy: Calculating Average Velocity or Speed**
 * Khan Academy: Calculating Average Velocity for Constant Acceleration**
 * [|Khan Academy: Calculating Distance from a Velocity/Time graph]** || [[file:Physics_AS_Unit2_09_SUVAT02.ppt]][[file:EquationsOfMotionQuestions02.doc]][[file:EquationsOfMotionQuestions02_WorkingsOut.pdf]][[file:EquationsOfMotion03.doc]]
 * **10** || **Projectiles 01**
 * To understand the concept of projectiles
 * To be able to complete projectile calculations successfully
 * **11** || **Ticker Tape Experiment** || [[file:Instructions.doc]][[file:TrolleyVelocityTimeGraph.pdf]] ||
 * **12** || **Projectiles 02**
 * To recognise //projectile-like// problems
 * To check understanding via motion graphs
 * To set the scene for harder problems || [[file:Physics_AS_Unit2_12_Projectiles_02.ppt]][[file:projectiles2.doc]] ||
 * **13** || **Vector Addition by Scale Drawing**
 * To ensure we know what scalars and vectors are
 * To be able to find the resultant for two or more vectors by scale drawing

Khan Academy: Vectors in two Dimensions [|Vector Addition Link 1] [|Vector Addition Link 2] For those of you who were trying to do scale drawing without any drawing, or scale for that matter, and preferred to do the sums.. there is a video here showing how the cosine and sine rules can be employed to do the sums: [|Cosine & Sine Rule] || || The Links below contain alternative video explanations of vector addition: [|Vector Addition Video 1 (fizzicsorg)] [|Vectors 1 (from PhyzWizz see Vectors 2 below)] The Links below contain alternative video explanations of resolving vectors into perpendicular components [|Resolving Vectors a beginner's guide (fizzicsorg)] [|Vectors 2 (from PhyzWizz see Vectors 1 above)] || || There are three [|short video tutorials here], which will help refresh what was covered during this lesson. It is worth watching: //"Scalars", "Vectors" and "Resolving Vectors".// //Khan Academy: Introduction to Vectors and Scalars// || || [|Eureka! Episode 8 Work Done] || || Khan Academy: Gravity and Astronauts Khan Academy: Would a Brick or a Feather Fall Faster? || || ||
 * **14** ||  ||   ||
 * **15** ||  ||   ||
 * **16** || Calculating Resultant Vectors and Resolving vectors into components
 * To know how to add a pair of **__perpendicular__** vectors to find the single **__resultant__** vector.
 * To be able to **__resolve__** a collection of arbitrary vectors into perpendicular components
 * Urhm? Then you can apply 1 above
 * **17** || Balanced Forces, (Forces in Equilibrium)
 * To __start__ to use our vector adding and resolving skills to solve systems of balanced forces
 * || **Half-Term Revision for Material& Motion Exam. Open book exam and mark scheme** || [[file:Y12_Autumn_OpenBook.pdf]][[file:MS_Y12_Autumn_OpenBook.pdf]][[file:WorkedExample_Y12_Autumn_OpenBook.pdf]] ||
 * **18** || Inclined Planes :
 * To fully understand the terms resultant force and resolving into perpendicular components.
 * To be able to visualise the geometry and trigonometry present within such problems
 * To be able to solve inclined plane problems || [[file:PhysAS_17_InclinedPlanes.ppt]][[file:ForcesInEquilibrium01.doc]][[file:PastQuestion_0910_04ResolvingKite.pdf]] ||
 * **19** || **Work Done**
 * To understand how to calculate the work done by a force.
 * To understand how WD can be extended from GCSE to AS
 * **20** || **Mechanical Power**
 * To understand how to successfully complete mechanical power problems
 * To apply these skills to the slightly more involved questions at AS || [[file:Physics_AS_Unit2_20_Power.ppt]][[file:force_work_energy_and_power.doc]] ||
 * **21** || **Gravitational Potential Energy & Kinetic Energy**
 * To understand qualitatively the concepts involved with K.E. & G.P.E.
 * To be able to successfully tackle K.E. & G.P.E. Problems.
 * To understand the concept of efficiency & to complete efficiency calculations
 * Khan Academy: Introduction to Gravity**
 * **22** || **The relationship between Force, Mass and Acceleration**
 * To confirm the relationship between acceleration, force and mass
 * Khan Academy: Calculating Acceleration** || [[file:Physics_AS_Unit2_22_Fma.ppt]] ||
 * **23** || **F=ma in Practice**
 * To look at the how F=ma presents itself in questions || [[file:Physics_AS_Unit2_23_FmaInPractice.ppt]] ||
 * **24** || **Terminal Velocity Practicle** || [[file:PhysAS_28_TerminalVelocityPractical.ppt]] ||
 * **25** || **Newton's Laws of Motion and Terminal Velocity**
 * To look at Newton’s Laws of Motions and to connect all recent work to them.
 * To understand terminal velocity
 * Khan Academy: Newton's First Law of Motion**
 * Khan Academy: Newton's Second Law of Motion**
 * Khan Academy: Newton's Third Law of Motion** || [[file:Physics_AS_Unit2_25_NewtonsLawTerminalVelocity.ppt]] ||
 * || **Open book mechanics exam** || [[file:Y12_ChristmasMechanics_OpenBook.pdf]]
 * **26** || **Gravitational Potential Energy & Kinetic Energy** || [[file:Physics_AS_Unit2_26_GPE_KE.ppt]] ||
 * **27** || **Moments 1**
 * To **__fully understand__** what is meant by the moment of a force
 * To be able to solve problems involving moments || [[file:Physics_AS_Unit2_27_Moments1.ppt]][[file:moments01.doc]] ||
 * **28** || **Moments 2**
 * To connect together moments and centre of mass (centre of gravity)
 * To connect together theory and practical
 * To solve more complex moments problems || [[file:Physics_AS_Unit2_28_Moments2.ppt]][[file:Moments2.doc]] ||
 * **29** || **Couples, Torques & Toppling**
 * To know the names of some special case moments.... (Couple/Torque)
 * To understand stable/unstable equilibrium, tilting, & toppling || [[file:Physics_AS_Unit2_29_TorqueCouplesToppling.ppt]] ||
 * **30** || **Toppling Due to slopes**
 * To understand Toppling and Toppling due to a slope || [[file:Physics_AS_Unit2_30TopplingDueToSlopes.ppt]][[file:couples_and_stability.doc]] ||
 * **31** || **Waves Introduction 01**
 * To understand some common sources of waves
 * To understand the differences between longitudinal and transverse waves
 * To understand properties which are common to all waves || [[file:Physics_AS_Unit2_31_WavesIntro.ppt]] ||
 * **32** || **Waves Introduction 02**
 * To understand the derivation of the wave speed equation
 * To understand the concept of phase difference
 * To introduce superposition and interference || [[file:Physics_AS_Unit2_32_WavesIntro2.ppt]] ||
 * **33** || **Standing Waves 01**
 * To begin to understand the concept of standing waves
 * To begin to understand the concept of harmonics
 * To begin to understand how the concept of standing waves can be used to establish the frequency of a set of waves || [[file:Physics_AS_Unit2_33_StandingWaves01.ppt]] ||
 * **34** || **Standing Waves 02**
 * To look in more depth at standing waves on strings
 * To begin to understand how the concept of standing waves can be used to establish the frequency of a set of waves || [[file:Physics_AS_Unit2_34_StandingWaves02.ppt]] ||
 * **35** || **Refraction Practicle** || No powerpoint ||
 * **36** || **Refraction Theory**
 * To recap ray diagrams
 * To understand the concept of refraction
 * To be able to carry out refractive index calculations || [[file:Physics_AS_Unit2_36_RefractionTheory.ppt]] ||
 * **37** || **Total Internal Reflection**
 * To understand the concept of Total Internal Reflection (T.I.R.)
 * To be able to apply TIR to applications such as fibre optics and gem stones || [[file:Physics_AS_Unit2_37_TIR.ppt]] ||
 * **38** || **Refraction 3**
 * To look further at refraction maths
 * To understand dispersion || [[file:Physics_AS_Unit2_38_Refraction3.ppt]] ||
 * **39** || **Young's Double Slits**
 * To understand double slit interference and the use and implications of the experiment
 * To be able to complete calculations related to Young’s double slit experiments || [[file:Physics_AS_Unit2_39_YoungsDoubleSlits.ppt]] ||
 * **40** || **Lasers**
 * To consolidate some terms and definitions before moving on
 * To describe a standing wave practical related to microwaves which is the basis of common exam questions || [[file:Physics_AS_Unit2_40_Lasers.ppt]] ||
 * **41** || **Diffraction**
 * To understand diffraction
 * To understand how waves pass through a single slit
 * To undertake a virtual microwave diffraction experiment and to produce a good quality graph || [[file:Physics_AS_Unit2_41_Diffraction.ppt]] ||
 * **42** || **Diffraction Gratings**
 * To understand diffraction gratings
 * To understand how changing wavelength and slit size affect the transmitted pattern
 * To understand how the diffraction grating equation is derived
 * To be able to complete diffraction grating related calculations || [[file:Physics_AS_Unit2_42_DiffractionGrating.ppt]] ||
 * || ** Note additional resources related to the practical exam can be found under UNIT 3 ** ||  ||