A crane lifts a shipping container vertically at a constant speed.
Which two quantities can be used to calculate the useful power output of the crane?
the weight of the container and the vertical distance moved only
the work done on the container and the vertical distance moved only
the work done on the container and the time taken only
the mass of the container and the time taken only
95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.