A worker pushed a 27kg block 92 m along a level floor, Ask an Expert

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A worker pushed a 27kg block 9.2 m along a level floor atconstant speed with a force directed 32o below thehorizontal. If the coefficient of kinetic friction betweenblock and floor was 0.20, what were

a) the work done by theworker's force and

b) the increase in thermal energy of theblock-floor system?

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