Physics

Physics

Problem

If the velocity of train A relative to train B is 15 m s−115\,\text{m\,s}^{-1} toward the east, what is the velocity of train B relative to train A? a) 15 m s−115\,\text{m\,s}^{-1} east b) 0 m s−10\,\text{m\,s}^{-1} c) 15 m s−115\,\text{m\,s}^{-1} west d) 30 m s−130\,\text{m\,s}^{-1} east

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