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Unformatted text preview: luzon (jrl2375) – HW3 – Liu – (80440) 1 This printout should have 23 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. This assignment is due at 9:00PM Monady, September 14, 2009 001 10.0 points Four vectors, each of magnitude 13 m, lie along the sides of a parallelogram as shown in the figure. The angle between vector A and B is 50 ◦ . Hint: Remember you are adding four vec tors. A 1 3 m C 13 m B 13 m D 1 3 m 50 ◦ What is the magnitude of the vector sum of the four vectors? Answer in units of m. 002 10.0 points Bob heads out into a lake at an angle of 36 ◦ with respect to the shore. If his boat is capable of a speed of 2 . 8 m / s, how far from land will he be in 7 min and 21 s ? Answer in units of m. 003 (part 1 of 2) 10.0 points A roller coaster travels 201 ft at an angle of 33 . 6 ◦ above the horizontal. How far does it move horizontally? Answer in units of ft. 004 (part 2 of 2) 10.0 points How far does it move vertically? Answer in units of ft. 005 (part 1 of 2) 10.0 points A particle undergoes three consecutive dis placements: vector d 1 = d 1 x vector i + d 1 y vector j + d 1 z vector k vector d 2 = d 2 x vector i + d 2 y vector j + d 2 z vector k vector d 3 = d 3 x vector i + d 3 y vector j , where d 1 x = 2 . 54 cm , d 1 y = 3 . 42 cm , d 1 z = 1 . 15 cm , d 2 x = 2 . 14 cm , d 2 y = . 919 cm , d 2 z = 4 . 06 cm , d 3 x = 2 cm , d 3 y = 3 . 13 cm ....
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This note was uploaded on 10/19/2009 for the course PHYS 2425 taught by Professor Kumar during the Spring '08 term at Dallas Colleges.
 Spring '08
 KUMAR
 Physics

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