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A number of amusement parks have rides that make loops like the one shown in Figure 6.33. For safety, the cars are attached to the rails in such a way cannot fall off. If the car goes over the top at just the right speed, gravity alone will supply the
(a) The car goes over the top at faster than this speed?
(b) The car goes this speed?
Figure 6.33 Amusement rides with a vertical loop are an example of a form of curved motion.
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