TOPIC TEST: Forces in Action – Nov 2018

Slides:



Advertisements
Similar presentations
Voltage in Electrical Systems
Advertisements

Scalar quantities have magnitude only. Vector quantities have magnitude and direction. Examples are: Scalar quantities: time, mass, energy, distance, speed.
Physics 151 Week 4 Day 2 Topics –Motion Graphs –Area under a curve (velocity to position) –Constant acceleration equations.
Honors Physics Mr. Payne April 30, Today: Uniform Fields – Gravitational and Electrical – Homework: Problems 5, 6, 11, 12, page 489 – (Problems.
Motions and Forces. How is speed calculated? The speed of an object can be calculated using this equation: distance travelled time taken speed =
Gravitational Potential energy Mr. Burns
Physics Chapter 4: Forces and the Laws of Motion
Vectors 1D kinematics 2D kinematics Newton’s laws of motion
A Mathematical Model of Motion
What to Review for the Final Exam Physics I 1 st Semester
Terminal Velocity D. Crowley, 2008.
Rotational Motion and The Law of Gravity 1. Pure Rotational Motion A rigid body moves in pure rotation if every point of the body moves in a circular.
VECTORS, SCALARS AND VECTOR ADDITION YEAR 12 UNIT 1 MODULE 1 LESSON 2.
Newton’s Second Law of Motion Physics Fall  Newton’s first law of motion (inertia) predicts the behavior of objects when all forces are balanced.
Forces and the Laws of Motion
Circular Motion and Oscillations. Useful information Link to specification. specification.pdf
Motion Revision Quiz questions. Round 1 1.Which of the following is a scalar measurement? displacement distance velocity.
Explain why an object traveling in a circular path at a constant speed has acceleration. Circular motion Objects traveling in a circular path at a constant.
© 2010 Pearson Education, Inc. Lecture Outline Chapter 5 College Physics, 7 th Edition Wilson / Buffa / Lou.
Laws of Motion and Force Diagrams Many of the following slides are from the online physics site:
Forces Chapter 6.1. What You Already Learned Velocity is the ratio of the change in position of an object over a period of time. Acceleration describes.
Units Motion Scalar / vector quantities Displacement / Velocity / Acceleration Vector components Forces 1 st & 2 nd law ∑ F = 0 & ∑ F = ma Force diagrams.
Chapter 2.2 Objectives and Vocabulary acceleration deceleration Newton's second law Define and calculate acceleration. Explain the relationship between.
What to Review for the Final Exam Physics I 1 st Semester
Chapter 5 The Laws of Motions
Unbalanced Forces. Topic Overview A force is a push or a pull applied to an object. A net Force (F net ) is the sum of all the forces on an object (direction.
Work Readings: Chapter 11.
Day 3: Electric Fields. Objectives Static Electricity Electric Field Properties 1 & 2 –Dimensional Electric Field Calculations of Point Charges.
Questions From Reading Activity? Assessment Statements Gravitational Field, Potential and Energy Explain the concept of escape speed from a planet.
IB Assessment Statements Topic 9.2, Gravitational Field, Potential and Energy Define gravitational potential and gravitational potential energy.
Impulse & Momentum Physics 11. Momentum  The product of a particle’s mass and velocity is called the momentum of the particle:  Momentum is a vector,
How are mass, force and acceleration related?
Forces Chapter 6.1. What You Already Learned Velocity is the ratio of the change in position of an object over a period of time. Acceleration describes.
StartingTask As a pair consider how to test the relationships between either: force and acceleration mass and acceleration force and direction What do.
Projectile Motion.
Forces and Laws of Motion Force Force is the cause of an acceleration, or the change in an objects motion. This means that force can make an object to.
FORCES AND CIRCULAR MOTION. A. Definition: a push or pull acting on a mass 1. Force is a vector quantity with both magnitude (numeric value) and direction.
Gravitational Force  Gravity= a force of attraction between objects, “pulls” objects toward each other  Law of universal gravitation= all objects in.
Section 1 Displacement and Velocity Chapter 2 One Dimensional Motion To simplify the concept of motion, we will first consider motion that takes place.
LINEAR MOTION Advanced Higher Physics. Calculus Methods.
Forces and Newton’s Laws of Motion. 4N Sketch a labelled vector diagram to show the net force being applied to the box. 10N 2N 3N Box Starter.
Monday, Oct. 18, 2004PHYS , Fall 2004 Dr. Jaehoon Yu 1 1.Gravitational Potential Energy Escape Speed 2.Power 3.Linear Momentum 4.Linear Momentum.
Review, HWK check Monday, October 31, 2016.
PHYS 1441 – Section 002 Lecture #7
Vectors for Mechanics.
P2 REVISION – MOTION Describe what is happening in the graph between points: A-B: B-C: C-D: D-E: Using the formula speed = distance time work out the.
AP Physics 1 Review Session 1
Calculating acceleration
Motion Physics: Unit 2.
Newton’s Laws Acceleration
PHYS 1443 – Section 002 Lecture #12
P2 Higher Revision - The harder bits.
Calculating acceleration
Force Diagrams.
DO NOW Pick up “To the Finish Line”.
Chapter 3.
Coulomb’s Law Section
Gravitational Potential energy Mr. Burns
Or FORCE-BODY-DIAGRAMS
Calculating acceleration
PHYS 1441 – Section 002 Lecture #8
Motion in One Dimension
Conservation Laws Momentum and Impulse
GRAVITATIONAL POTENTIAL & KINETIC ENERGY
Speed Velocity Acceleration Freefall
Revision Quiz Bowl Units and Measurement
NEWTON'S LAWS OF MOTION There are three of them.
Physics Chapter 5 – Forces– speed and velocity
NEWTON'S LAWS OF MOTION There are three of them.
Presentation transcript:

TOPIC TEST: Forces in Action – Nov 2018 Strengths: Precision in calculations Explanations involving multiple steps e.g. acceleration and mass, features of graphs, terminal velocity Areas for development: Recognising when to use equations of motion (Constant velocity? Accelerating?) Features of motion graphs Gradient, area… Guided by number of marks the question is worth Review vectors for test on Monday: Vector components Vector triangles Free-body diagrams Other related topics: Velocity/acceleration Equations of motion Stars of the week: Jack Powell, Matt (but see below) Excellent explanation of the relationship between acceleration and mass Mistake of the week: Tyler, Matt Grams… enough said

TOPIC TEST: Equations of motion – Oct 2018 Strengths: Gradient of the tangent at that point Calculation of acceleration from velocities in different directions Areas for development: “Area under the graph” – not 100% right! Be more precise. Values are negative, not the unit (e.g. –ms-2 , -8.5ms-2 ) 1. Respond to feedback (Questions, corrections, notes) 2. Describe how you can obtain displacement from a velocity-time graph. 3. Calculate the acceleration: 12ms-1 8ms-1 Makes contact with the wall for 0.2s (positive direction: to the left) 4. Homework task on obtaining a value for acceleration by freefall by experiment Stars of the week: Brandon, Jake, Josh, Ethan, Milly, (Joe) Correct use of +/- velocity as a result of directions Mistakes of the week: Tyler: wrote the wrong unit on a perfectly calculated answer! Matt: missed the 2 out of the last line of a calculation!

TOPIC TEST: Gravitational fields – Oct 2018 1. Respond to feedback (Questions, corrections, notes) 2. If necessary: redo test for Tuesday 6th November Strengths: Precise recall of a law or definition Quality of calculations Using a series of values to show a constant, e.g. gr2=constant Areas for development: Precise recall of all parts of a law “Sum of” instead of “product of” – care with different meanings Not writing out the formula at the beginning… …and then going wrong! Silly mistakes: missing squared, unit conversion etc. Standard form: e.g. 2.0x108 not 200,000,000 Star of the week: Connor Series of faultless calculation answers: Formula > Calculation > Correct answer Mistakes of the week: Incorrectly converting 1g into kg! Dominic, Alice, Charlie (0.01kg!); Isabelle (0.1kg!)

TOPIC TEST: Circular motion – Nov 2018 Re-do question 3b starting with a clear diagram. Consider the starting points to questions that involve forces. Revisit the extension question about the ISS. Strengths: Clear approach from some in question involving multiple forces ‘Starting points’ used well by some Areas for development: Fuller answer needed for a question like 2d (not just “Friction”) Visualise the question context better Spotting the ‘starting point’: e.g. 3c “Lost contact with the ground” – how does this affect one of the forces? Stars of the week: Adam W, Alfie, Joel, Cade, Alex, Dominic Clear approach to tackling question 3b) Mistake of the week: Johnny: did the working out then forgot to write the answer! (3a)

TOPIC TEST: Electric fields – Nov 2018 Respond to feedback (Questions, corrections, notes) State the definition of electric potential On the diagram above, what is the direction of the electric field strength at points A, B and C? On the diagram above, what is the resultant electric field strength at point B? Strengths: Recall of definition using precise language Precision in calculations Drill it: formula → calculations → clear answer (+ unit) Areas for development: Express larger numbers as standard form (to 2 or 3 s.f.) e.g. 71934.44Vm-1 express 7.19x104Vm-1 or 7.2x104Vm-1 Consider components of vector quantities when thinking about how to solve a problem (quantity x cos) -10μC -10μC A C 80O 10cm B 10cm Star of the week: Adam P Quality of answers throughout (but make one of them more concise) Mistakes of the week: Isobelle & Ryder: writing the wrong definition out (flawlessly!) Ethan: writing out the correct calculation and answer… then crossing it out and writing out the wrong answer!