AQA · Physics · 8463
GCSE Physics: Work done and energy transfer
Forces · AQA GCSE Physics (8463), specification point 4.5.2. Cards are generated from the exam board's own specification for "Work done and energy transfer", and every card links back to the page it came from. Specification © AQA — used with attribution.
10 flashcards · Free to study · No account needed
Study this deck
Preparing your cards…
All questions and answers
Read through the full deck, or practise recalling each answer above.
When is work done on an object by a force?
Show answer
When the force causes the object to move through a distance (a displacement) along the line of action of the force.
What is the equation for work done by a force?
Show answer
W = F s — work done = force × distance moved along the line of action of the force.
Work done is measured in ? (J).
Show answer
joules
What is the unit of force in the equation W = F s?
Show answer
Newtons (N).
What is the unit of distance s in the equation W = F s?
Show answer
Metres (m).
Define one joule of work.
Show answer
The work done when a force of one newton causes a displacement of one metre.
1 joule = 1 ?.
Show answer
newton-metre
What effect does work done against friction have on an object?
Show answer
It causes a rise in the temperature of the object (energy is transferred to its thermal store).
Calculate the work done when a 20 N force moves an object 3 m along its line of action.
Show answer
W = F s = 20 × 3 = 60 J.
How many joules are equivalent to 250 newton-metres?
Show answer
250 J (1 newton-metre = 1 joule).
Want to create your own cards? Create a free account. AI generation uses credits.