4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance of 5.00 m. in the x-direction. (a) What is the work done by the force? (b) If this is the only force doing work, what is the final speed of the mass? (c) If there is friction in the system and the final speed of the mass is actually 11.0 m/s, what must the coefficient of kinetic friction be?

4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance of 5.00 m. in the x-direction. (a) What is the work done by the force? (b) If this is the only force doing work, what is the final speed of the mass? (c) If there is friction in the system and the final speed of the mass is actually 11.0 m/s, what must the coefficient of kinetic friction be?

Name: 4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance
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Description: 4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance of 5.00 m. inthe x-direction. (a) What is the work done by the force? (b) If this is the only forcedoing work, what is the final speed of the mass? (c) If there is friction in the

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Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Question

4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance of 5.00 m. in
the x-direction. (a) What is the work done by the force? (b) If this is the only force
doing work, what is the final speed of the mass? (c) If there is friction in the
system and the final speed of the mass is actually 11.0 m/s, what must the
coefficient of kinetic friction be?
Answers: (a) 100 J, (b) 11.5 m/s, (c) 0.629

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