Machine A does of work in

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Machine A does 6.0 kJ6.0\,\text{kJ} of work in 10 s10\,\text{s}, while Machine B does 4.5 kJ4.5\,\text{kJ} of work in 6.0 s6.0\,\text{s}. (i) Calculate the average power output of each machine. (ii) Which machine is more powerful, and by what percentage is its power greater than that of the other machine?

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