11 mark
An object moved 20 cm with a force of 20 N.
Use the equation: work done = force × distance
Which is the correct calculation of work done?
0.4 J
4.0 J
40 J
400 J
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Work Done & Energy Transfer (OCR Gateway GCSE Physics: Combined Science)
Topic Questions
11 mark
A student uses 2250 J of energy climbing up steps. It takes the student 15 seconds to climb the steps.
Calculate the power of the student.
Use the equation: power = work done ÷ time taken
15 W
150 W
9000 W
33 750 W
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21 mark
A student of weight W runs up a flight of stairs.
She moves a distance d metres horizontally and h metres vertically.
What is the work done against gravity running up the stairs?
W × d
W × h
(W × d) + (W × h)
W x
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31 mark
Which sentence is the definition of the power of a machine?
The amount of work done by the machine.
The efficiency of the machine.
The number of joules of energy the machine requires to work.
The rate at which energy is transferred by the machine.
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