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Answer to Question #41030 in Mechanics | Relativity for alzahra ali

Question #41030
An object of mass 10 kg is pulled across a rough floor at a constant speed of 4 m/s using a force of
40 N, then the coefficient of kinetic friction is (ignoring air resistance):
a) 0.4 b) 4 c) Zero d) 0.25 e) 2.5
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