A river boat is traveling north directly across 100 m wide river at an average velocity of 10 m/s current traveling east. How long will it take the boat to reach the other side of the river?

he kicked it 10 feet straight up into the air? i think this works.

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explanation:

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west