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Problem: A horizontal force of 80N acts on a mass of 6 kg resting on a horizontal surface. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant:
a. Calculate the total energy expended in the acceleration.
b. Plot a graph of the kinetic energy of the mass against time.
c. Plot a graph of the kinetic energy of the mass against distance.
d. Calculate the coefficient of friction between the mass and the surface.
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