SOLUTION: A boat is traveling east across a river that is 112 meters wide at 8 meters per second. If the river has a northward current of 5 meters per second, what is the resultant speed of
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Question 1155074: A boat is traveling east across a river that is 112 meters wide at 8 meters per second. If the river has a northward current of 5 meters per second, what is the resultant speed of the motorboat rounded to the nearest tenth?
1). 9.4 m/s
2). 3.0 m/s
3). 8.6 m/s
4). 13.0 m/s
This problem confused me because it is not an upstream / downstream problem. The directions, east and west, are not opposite of each other.
Right angled triangle with one leg of 8 units directed across the river and the other leg of 5 units directed along the rive (current (!)).
The resulting speed is the HYPOTENUSE = 9.433 m/s.
ANSWER. Option A)
Solved, explained and completed.
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It is about the vector rule of adding velocity vectors.
