Question: A 12.0 N force with a fixed orientation does work on a particle as the particle moves through displacement d = (2.00i 4.00i +

A 12.0 N force with a fixed orientation does work on a particle as the particle moves through displacement d = (2.00i – 4.00i + 3.00k) m. What is the angle between the force and the displacement if the change in the particle's kinetic energy is?
(a) + 30.0 J and
(b) – 30.0 J?

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