An object receives an initial push, giving it an initial velocity of 2.0 m/s. It then slides across a rough surface and comes to a stop after traveling a distance of 0.5 m. Assuming that the acceleration of gravity is 10 m/s², the coefficient of kinetic friction between the object and the surface is A) 0.2. B) 0.4. C) 0.6. D) unknown; the answer cannot be determined without knowing the mass of the object.

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Quizplus · Accepted Answer

The work done by friction is equal to the initial kinetic energy. Using the formula for work done by friction (friction force * distance) and equating it to the initial kinetic energy (0.5 * mass * velocity^2), the mass cancels out, allowing us to solve for the coefficient of kinetic friction without needing the mass.

An Object Receives an Initial Push, Giving It an Initial