Basic Boating Terms
Any help in this matter would be appreciated math – on vectors.?
(Vectors i and j are vectors in horizontal direction due east, and due north), two vessels A and B are moving with constant speeds. A boat moves at a speed 9d km / h. Boat moves with a speed B (3i 5 j) km / h. At noon, A is at point O, and B is 10 km due west of O. At time t hours after noon, the position vectors of A and B versus O are km and km b respectively. b) find expressions for a and b in terms of T c) find the time when B is due south of A at time t hours after noon, the distance between A and B DKM. Finding expression -> AB d) show that ^ 2 ^ 2 = 25t-60t 100 At noon, the boats are 10 km away e) to find the time of the afternoon during which the boats are 10 km apart I know that many pieces, I think I get the basic principle, but not sure. Any help would be great.
a is 0 * i + j * 9t I include the terms "focus, normally you should not write b is (-10 + 3T) * i + j * 5t Stop here to convince those who You are met, including by evaluating at t = 0. For c you solve – 10 + 3T = 0. This gives the only answer. He also said you vessels are aligned on a line north-south vertical, without telling you which is north of the other (or if they are in the same place). So you should check the frame. Once you have done d) you do e) by setting d ^ 2 = 100 and solve a quadratic equation in t. (It turns be very easy.)
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The Boat Alphabet Book $16.78 This introduction to the alphabet also introduces readers to 26 different types of boats and explains basic nautical terms. Color illustrations accompany the text. |
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The Boat Alphabet Book $7.87 This introduction to the alphabet also introduces readers to 26 different types of boats and explains basic nautical terms. Color illustrations accompany the text. |