Physics

Physics

Problem

A boat moves through still water at 4 m s−14\,\text{m\,s}^{-1} due east while a river current flows 3 m s−13\,\text{m\,s}^{-1} due north. The speed and direction of the boat relative to the ground are a) 5 m s−15\,\text{m\,s}^{-1} at 53∘53^{\circ} north of east b) 5 m s−15\,\text{m\,s}^{-1} at 37∘37^{\circ} north of east c) 7 m s−17\,\text{m\,s}^{-1} at 37∘37^{\circ} north of east d) 5 m s−15\,\text{m\,s}^{-1} at 37∘37^{\circ} east of north

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