Physics

Physics

Problem

Four gardeners push lawn rollers on level ground as follows (constant force applied, steady speed achieved): P: 180 N180\,\text{N} at 1.5 m/s1.5\,\text{m/s} Q: 200 N200\,\text{N} at 1.4 m/s1.4\,\text{m/s} R: 220 N220\,\text{N} at 1.2 m/s1.2\,\text{m/s} S: 250 N250\,\text{N} at 1.0 m/s1.0\,\text{m/s}. Which gardener is doing the maximum power? a) R b) Q c) P d) S

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