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July 28, 2014

Homework Help: physics

Posted by marissa on Friday, September 14, 2012 at 3:50pm.

A 316-kg boat is sailing 12.0 north of east at a speed of 1.60 m/s. 39.0 s later, it is sailing 36.0 north of east at a speed of 4.00 m/s. During this time, three forces act on the boat: a 31.4-N force directed 12.0 north of east (due to an auxiliary engine), a 20.7-N force directed 12.0 south of west (resistance due to the water), and (due to the wind). Find the (a) the magnitude and (b) direction of the force . Express the direction as an angle with respect to due east.

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