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!