3. Which or which of the following is an example of a non-inertial observation frame? I) A vehicle that can travel in a straight line with a constant velocity in the forward and reverse directions. II) A vehicle traveling on a circle of constant radius with a constant velocity magnitude. III ) A vehicle traveling only forward in a straight line with a constant velocity. IV) A vehicle that starts from rest on a frictionless inclined plane. a) I and III b) II and IV c) I, II and IV d) I, II and III e) III and IV

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