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Unformatted text preview: PHYSICS C SECTION 1, MECHANICS Time45 minutes 35 Questions Directions: Each of the questions or incomplete statements below is followed by five suggested answers or completions. Select the one that is best in each case and then fill in the corresponding oval on the answer sheet. Note: To simplify calculations, you may use g = 10 m/s 2 in all problems. 1. A force F is exerted by a broom handle on the head of the broom, which has a mass m. The handle is at an angle θ to the horizontal, as shown above. The work done by the force on the head of the broom as it moves a distance d across a horizontal floor is (A) Fd sin θ (B) Fd cos θ (C) Fm cos θ (D) Fm tan θ (E) Fmd sin θ 2. The velocity of a projectile at launch has a horizontal component υ h and a vertical component υ v . Air resistance is negligible. When the projectile is at the highest point of its trajectory, which of the following show the vertical and horizontal components of its velocity and the vertical component of its acceleration? Vertical Horizontal Vertical Velocity Velocity Acceleration (A) υ v υ h (B) υ v (C) υ h (D) g (E) υ h g Copyright © 1976 to 1998 by Educational Testing Service, Princeton, NJ 08541. All rights reserved. For facetoface teaching purposes. Classroom teachers are permitted to reproduce the questions. Made available for convenience, accessibility and adaptation purposes by Ron Esman, Abilene High School, 2800 N. 6 th Street, Abilene, Texas 79603 3. The graph above shows the velocity υ as a function of time t for an object moving in a straight line. Which of the following graphs shows the corresponding displacement x as a function of time t for the same time interval? Copyright © 1976 to 1998 by Educational Testing Service, Princeton, NJ 08541. All rights reserved. For facetoface teaching purposes. Classroom teachers are permitted to reproduce the questions. Made available for convenience, accessibility and adaptation purposes by Ron Esman, Abilene High School, 2800 N. 6 th Street, Abilene, Texas 79603 4. The position of a toy locomotive moving on a straight track along the xaxis is given by the equation x t t t =  + 3 2 6 9 , where x is in meters and t is in seconds. The net force on the locomotive is equal to zero when t is equal to (A) zero (B) 2 s (C) 3 s (D) 4 s (E) 5 s 5. A system of two wheels fixed to each other is free to rotate about a frictionless axis through the common center of the wheels and perpendicular to the page. Four forces are exerted tangentially to the rims of the wheels, as shown above. The magnitude of the net torque on the system about the axis is (A) zero (B) FR (C) 2 FR (D) 5 FR (E) 14 FR 6. A wheel of mass M and radius R rolls on a level surface without slipping. If the angular velocity of the wheel is ϖ , what is its linear momentum?...
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This note was uploaded on 11/11/2008 for the course PH X taught by Professor Goodlore during the Spring '05 term at SouthArk.
 Spring '05
 Goodlore
 Physics, mechanics

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