Vectors, Resultants, Work and Elasticity
Representing forces, finding resultants and linking work, deformation and elastic energy to force-distance evidence.
How to study for GCSE Combined Science
Build the three sciences as connected disciplines, practise mathematical and practical reasoning, then apply the common core to the exact tier and paper structure of your current specification.
Core concepts
Concept 1
Forces are vectors with magnitude and direction; the resultant is the single force with the same overall effect.
Exam cue: Choose a sign convention or scale diagram before combining vectors.
Concept 2
Work is energy transferred when a force moves an object through a distance in the force direction.
Exam cue: Identify the proportional region before applying a spring constant.
Concept 3
Elastic deformation is reversible below the relevant limit, and force-extension behaviour can store elastic energy.
Targeted study blocks
Tier coverage
Foundation core with Higher-tier extensions
Higher-tier papers can require scale vector diagrams, components, linked elastic-energy calculations and unfamiliar force systems.
Risk pitfalls and guardrails
Adding opposite forces without direction.
Guardrail: Do not import separate-science content or another route's paper order; use the full physics equations sheet required for current specifications while checking the exact series materials and entered tier.
Assuming every deformed object returns to its original shape.
Guardrail: Do not import separate-science content or another route's paper order; use the full physics equations sheet required for current specifications while checking the exact series materials and entered tier.
Memory anchors
Vector quantity
A quantity with magnitude and direction.
Resultant force
The single force equivalent to all forces acting together.
Mechanical work
Energy transferred by a force acting through a distance.
Elastic deformation
A reversible change of shape when force is removed.
Spring constant
Force per unit extension in the proportional region.
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 student records mass, time, temperature and force. Which recorded quantity requires both magnitude and direction?
A 12 N force acts east and a 7 N force acts west. What is the resultant?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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