A 014-Km Wide River Flows with a Uniform Speed of 4

question 58

Multiple Choice

A 0.14-km wide river flows with a uniform speed of 4.0 m/s toward the east. It takes 20 s for a boat to cross the river to a point directly north of its departure point on the south bank. What is the speed of the boat relative to the water?

• A) 5.7 m/s
• B) 8.5 m/s
• C) 8.1 m/s
• D) 7.0 m/s
• E) 6.4 m/s

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