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A can of bolts and nuts is pushed 2.00 m along an x axis by a broom along the gr

ID: 2169725 • Letter: A

Question

A can of bolts and nuts is pushed 2.00 m along an x axis by a broom along the greasy (frictionless) floor of a car repair shop in a version of shuffleboard. The figure gives the work W done on the can by the constant horizontal force from the broom, versus the can's position x. The scale of the figure's vertical axis is set by Ws = 7 J. (a) What is the magnitude of that force? (b) If the can had an initial kinetic energy of 3 J, moving in the positive direction of the x axis, what is its kinetic energy at the end of the 2.00 m?

Explanation / Answer

a)F = 7/2 = 3.5N b)=7-3 = 4J

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