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Unformatted text preview: the picture at right there is force F which is pulling the boat down the ramp. F is the force pressing against the ramp. The resultant force F is gravity. Example If v=4i+3j and w=3i+5j, find the projection of v onto w.654321 1 2 3 4 5 6 7654321 1 2 3 4 5 6 x y v w Work: An Application of the Dot Product Example 30 50 lbs An person pulls a sled with her dog on it along level ground by exerting a force of 50 pounds on a rope that makes an angle of 30 with the horizontal. How much work is done pulling the sled 100 feet? (a) (b) (c) (d) Find the angle between v and w. Round to the nearest tenth of a degree.v=ij and w=2i+3j. 30 100.7 101.3 29.5 (a) (b) (c) (d) Find v (w+u) if v=ij, w=2i+3j and u=3i+j g 1 4 5...
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 Fall '11
 jayjohn
 Vectors, Dot Product

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