Energy and work
4 marks · NormalA box is pushed along a floor by a force of 50 N for a distance of 6 m.
State the equation for work done.
Calculate the work done on the box.
State the energy transfer that takes place in this process.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) work done = force x distance OR W = F x d
(b) 300 J
(c) The box gains energy (for example, kinetic energy) as it is pushed.
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Correct equation stated: work = force x distance or W=F×d
M1 (b) · 1 mark · Correct substitution into W=F×d
A1 (b) · 1 mark · Correct answer with unit (300 J)
B1 (c) · 1 mark · Correct energy transfer identified (kinetic, or another suitable form)
Worked solution
(a) Equation for work done:
(b) Work done = 50 N × 6 m = 300 J
(c) The energy transferred to the box increases its kinetic energy.