A small ship capable of making a speed of 6.5 knots through still water maintains a heading due east while being set to the south by an ocean current. The actual course of the boat is from A to B, a distance of 11.4 nautical miles that requires exactly 2.2 hours. Determine the speed v. of the current and its direction 0 measured clockwise from the north. N(0°) -E(90°) 18 B Answers:

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.