How Paper 02 is built, how to score in the data analysis question, how to answer structured and extended-response questions with the right command words, and a self-marked mini mock.
5 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
Paper 02 is half of your grade. The same skills win marks every year: graphs with units, calculations with working, and explanations that use the right physics words.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Copy these into your notebook in your own words — that is how they stick.
2 h 30 min; 6 compulsory questions; 100 marks; 50% of the grade.
Q1 data analysis 25; Q2–Q3 structured 15 each; Q4–Q6 15 each.
Knowledge and Comprehension 35; Use of Knowledge 55; Experimental Skills 10.
Tables with units; labelled graph; gradient with unit; specific errors/improvements.
State, define, describe, explain, calculate, sketch, discuss, suggest.
Formula → substitution → answer with unit.
Learn word for word.
≈ 1.5 minutes per mark.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (36 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [12 marks]
A student measures the current I through a metal wire for different p.d. V. V = 1.0, 2.0, 3.0, 4.0, 5.0 V; I = 0.21, 0.40, 0.62, 0.81, 1.01 A. A calculator may be used.
(a) (a) State which variable is the independent variable and where it is plotted. [2]
(b) (b) State two features of a suitable scale for the axes. [2]
(c) (c) The best-fit line passes through (0, 0) and (5.0 V, 1.01 A). Calculate the gradient of the line, including its unit. [3]
(d) (d) Calculate the resistance of the wire from the gradient. [2]
(e) (e) State what the straight line through the origin shows. [1]
(f) (f) State one precaution that improves the accuracy of the readings. [2]
Question 2 [12 marks]
A ball of mass 0.20 kg is released from a height of 1.8 m. Take g = 10 N/kg and ignore air resistance.
(a) (a) Define gravitational potential energy. [2]
(b) (b) Calculate the potential energy of the ball before it is released. [3]
(c) (c) Calculate the speed of the ball just before it hits the ground. [4]
(d) (d) The ball rebounds to a height of 1.2 m. Calculate the percentage of its energy retained and state where the rest went. [3]
Question 3 [12 marks]
A kettle of power 1 800 W heats 1.5 kg of water from 20 °C to 100 °C. Take c(water) = 4 200 J/kg °C.
(a) (a) Calculate the energy needed to raise the water to 100 °C. [3]
(b) (b) Calculate the time taken, assuming no energy loss. [3]
(c) (c) Explain how convection distributes the energy through the water. [3]
(d) (d) A sound wave of frequency 500 Hz travels in air at 340 m/s. Calculate its wavelength. [3]
Everything in this lesson is based on these parts of the CXC syllabus and papers.