7 - In the river, whose current velocity is constant and 2 m / sec, a motor moves in the downstream direction with a constant speed of 8 m / sec relative to the water. How many m / sec does the child, who runs at a speed of 4 m / sec parallel to the river on the edge of the river, see the speed of the engine? A) 18 B) 8 C) 14 D) 12 E) 4
7 - In the river, whose current velocity is constant and 2 m / sec, a motor moves in the downstream direction with a constant speed of 8 m / sec relative to the water. How many m / sec does the child, who runs at a speed of 4 m / sec parallel to the river on the edge of the river, see the speed of the engine? A) 18 B) 8 C) 14 D) 12 E) 4
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7 - In the river, whose current velocity is constant and 2 m / sec, a motor moves in the downstream direction with a constant speed of 8 m / sec relative to the water. How many m / sec does the child, who runs at a speed of 4 m / sec parallel to the river on the edge of the river, see the speed of the engine?
A) 18
B) 8
C) 14
D) 12
E) 4
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