1.1 Motion Quantities and Graphs
Distance, time, average speed, scalar and vector quantities, displacement, velocity and interpreting distance-time and displacement-time graphs.
How to study for CCEA GCSE Physics
Link every equation to a physical model and unit, interpret graphs and evidence, and prepare each prescribed practical from method through evaluation.
Core concepts
Concept 1
Average speed is total distance divided by total time, while velocity combines rate of motion with direction.
Exam cue: Confirm the CCEA unit, tier and whether the task tests a model, calculation, explanation or practical judgement.
Concept 2
Distance is scalar and displacement is vector, so a journey can have non-zero distance but zero displacement.
Exam cue: Convert every distance and time to compatible SI units, identify the graph axes and calculate a gradient from a large triangle.
Concept 3
The gradient of a distance-time graph gives speed and the gradient of a displacement-time graph gives velocity.
Exam cue: Show substitutions and units, connect evidence to the physical model and limit the conclusion to the stated conditions.
Risk pitfalls and guardrails
Treating distance and displacement, or speed and velocity, as interchangeable.
Guardrail: Do not import an England board, Single Award or Double Award structure, and do not replace a causal physical explanation with an equation alone.
Importing an equation sheet, Higher-only boundary or paper convention from an England 9-1 board.
Guardrail: Use the current CCEA formatting to confirm Higher-only content and the correct paper duration; do not infer tier scope from another exam board.
Giving a calculator display or named law without the working, units, causal explanation or evidence the command word requires.
Guardrail: Do not import an England board, Single Award or Double Award structure, and do not replace a causal physical explanation with an equation alone.
Memory anchors
Scalar
A physical quantity with magnitude but no direction.
Vector
A physical quantity with both magnitude and direction.
Distance
The total path length travelled, measured in metres.
Displacement
The straight-line change in position with direction.
Average speed
Total distance moved divided by total time taken.
Graph gradient
Vertical change divided by horizontal change, interpreted from the axis quantities.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A runner completes 400 m in 50 s. What is the runner's average speed?
A pupil walks 3 m east and then 3 m west to the starting point. Which pair describes the journey?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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