CW3 - boland (kbb544) CW3 Mackie (10611) 1 This print-out...

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Unformatted text preview: boland (kbb544) CW3 Mackie (10611) 1 This print-out should have 3 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points Instructions for finding a buried treasure in- clude the following: Go 232 . 1 paces at 230 , turn to 107 and walk 247 paces, then travel 136 paces at 70 . Find the magnitude of the resultant dis- placement from the starting point. Correct answer: 255 . 46 paces. Explanation: Let east be 0 . Let : r 1 = 232 . 1 paces , 1 = 230 , , r 2 = 247 paces , 2 = 107 , r 3 = 136 paces , and 3 = 70 . The horizontal component of the resultant is R x = R 1 cos 1 + R 2 cos 2 + R 3 cos 3 = (232 . 1 paces) cos230 + (247 paces) cos 107 + (136 paces) cos 70 =- 174 . 892 paces and the vertical component is R y = R 1 sin 1 + R 2 sin 2 + R 3 sin 3 = (232 . 1 paces) sin230 + (247 paces) sin 107 + (136 paces) sin 70...
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This note was uploaded on 02/20/2011 for the course PHYS 1062 taught by Professor Mackie during the Spring '11 term at Temple.

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CW3 - boland (kbb544) CW3 Mackie (10611) 1 This print-out...

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