AP Physics 1 Quiz
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KINEMATICS
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Two cyclists move along a straight road. Cyclist 1 moves east at 7 m/s7\ \text{m/s} relative to the ground; Cyclist 2 moves west at 5 m/s5\ \text{m/s} relative to the ground. In Cyclist 2's reference frame, Cyclist 1's velocity is what? (Reference frames: ground and Cyclist 2.)
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