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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A boat is heading due east at speed v when passengers onboard spot a dolphin swimming due north away from them, relative to their moving boat. Which of the following must be true of the dolphin’s motion relative to a stationary observer floating in the water (choose one)? The dolphin is (a) heading south of east at a speed greater than v, (b) heading south of west at a speed less than v, (c) heading north of east at a speed greater than v, or (d) heading north of west at a speed less than v.

To determine
Which statement is true when a dolphin is spotted moving north from a boat moving at speed v heading due east.

Explanation

For the observers in the boat moving east to find the dolphin moving north, the dolphin must be moving in the north-east direction. For a stationary observer in the water, the motion of the dolphin will be north of east.

Conclusion:

The dolphin is heading north of east if the passengers onboard the boat see the dolphin moving north...

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