Which of the following movements will require the greatest amount of work to be done?
a force of 20 N20\text{ N}20 N moving an object a distance of 4.0 m4.0\text{ m}4.0 m
a force of 15 N15\text{ N}15 N moving an object a distance of 6.0 m6.0\text{ m}6.0 m
a force of 30 N30\text{ N}30 N moving an object a distance of 2.5 m2.5\text{ m}2.5 m
a force of 25 N25\text{ N}25 N moving an object a distance of 3.5 m3.5\text{ m}3.5 m
67 exam-style questions on CIE IGCSE Physics 1.7.2 Work done. Each one has a worked solution and a mark scheme showing where the marks go.