An automated deep-sea winch hoists a scientific core sample weighing 14 000 N14\,000\text{ N}14000 N from the ocean floor up to a research vessel.
The sample is lifted vertically through a height of 450 m.
The useful power developed by the winch motor is 3.5 kW.
Calculate the time, in seconds, needed to hoist the sample to the vessel.
26 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.