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air-in
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Homework Statement
A boat moves across the water at a constant 30 mph towards the west. If the motor is generating a thrust of 500 M then the force of friction on the boat must be...
a. 500 N to the east
b. 500 N to the west
c. less than 500 N to the east
d. less than 500 N to the west
Homework Equations
The Attempt at a Solution
I originally thought c, becuase the Ff must be going in the opposite direction of the boat, which would be east, and in order for it to actually be moving, Ff must be less than the thrust of 500 N, pushing the boat to the west.
C is incorrect though, so now I'm not sure what to think.