# Problem: At time t i, the kinetic energy of a particle is 30.0 J and the potential energy of the system to which it belongs is 10.0 J. At some later time tf, the kinetic energy of the particle is 18.0 J.(a) If only conservative forces act on the particle, what are the potential energy and the total energy of the system at time tf?(b) If the potential energy of the system at time tf is 5.00 J, are any nonconservative forces acting on the particle?(c) Explain your answer to part (b).

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At time t i, the kinetic energy of a particle is 30.0 J and the potential energy of the system to which it belongs is 10.0 J. At some later time tf, the kinetic energy of the particle is 18.0 J.
(a) If only conservative forces act on the particle, what are the potential energy and the total energy of the system at time tf?
(b) If the potential energy of the system at time tf is 5.00 J, are any nonconservative forces acting on the particle?
(c) Explain your answer to part (b).

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Our data indicates that this problem or a close variation was asked in Physics for Scientists and Engineers - Serway Calc 9th Edition. You can also practice Physics for Scientists and Engineers - Serway Calc 9th Edition practice problems.