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Unformatted text preview: soto (rrs946) Homework 3 Spurlock (41003) 1 This printout should have 89 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points A truck travels up a hill with a 14 incline. The truck has a constant speed of 28 m / s. What is the horizontal component of the trucks velocity? Answer in units of m / s. 002 (part 2 of 2) 10.0 points What is the vertical component of the trucks velocity? Answer in units of m / s. 003 10.0 points A hiker makes four straightline walks A 19 km at 105 B 32 km at 144 C 25 km at 183 D 26 km at 209 in random directions and lengths starting at position (41 km , 41 km) , A B C D How far from the starting point is the hiker after these four legs of the hike? All angles are measured in a counterclockwise direction from the positive xaxis. Answer in units of km. 004 (part 1 of 2) 10.0 points A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 37 with the positive x axis. The second has a magnitude of 8 . 8 m and makes an angle of 150 with the positive x axis. (see the figure below). After the third displacement the particle returns to its initial position. 150 37 1 5 m 8 . 8 m Find the magnitude of the third displace ment. Answer in units of m. 005 (part 2 of 2) 10.0 points Find the angle of the third displacement (mea sured from the positive x axis, with counter clockwise positive within the limits of 180 to +180 ). Answer in units of . 006 (part 1 of 2) 10.0 points A particle undergoes two displacements, mea sured from the positive xaxis, with counter clockwise positive. The first has a magnitude of 11 m and makes an angle of 79 with the positive x axis. The resultant displacement has a magnitude of 8 . 4 m directed at an angle of 118 from the positive x axis. 118 79 1 1 m 8 . 4 m Find the magnitude of the second displace ment. Answer in units of m. 007 (part 2 of 2) 10.0 points Find the angle of the second displacement (measured from the positive x axis, with coun terclockwise positive and within the limits of 180 to +180 ). Answer in units of . soto (rrs946) Homework 3 Spurlock (41003) 2 008 (part 1 of 3) 10.0 points A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 2 . 5 m, y = 3 . 5 m, and has velocity vectorv o = (3 m / s) +( 1 m / s) . The acceleration is given by vectora = (2 m / s 2 ) + (4 m / s 2 ) . What is the x component of velocity after 5 . 5 s? Answer in units of m / s. 009 (part 2 of 3) 10.0 points What is the y component of velocity after 5 . 5 s?...
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 Fall '11
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