ModelFinal - PHY 2011 : Fall 2007 Model Final TOTAL...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: PHY 2011 : Fall 2007 Model Final TOTAL POINTS=100 Time: 50 minutes Name (Please print) : INSTRUCTIONS : Show all your work for the work-out (non-multiple choice) problems so that the grader can clearly follow your line of thought and calculations! Showing work for multiple choice problems is not necessary. Use the reverse sides if necessary. DEFINITELY CIRCLE THE FINAL ANSWERS! (Formulas on last pages) Your final score : ( )/100 1 Questions 1-20: 2 points each. 1. When a particle undergoes uniform circular motion, its acceleration (a) changes in both magnitude and direction. (b) changes in direction but not in magnitude. (c) changes in magnitude but not in direction. (d) changes in neither magnitude nor direction. 2. The angle between the vectors and is ) 4 3 ( j i ) 3 4 ( j i + (a) zero. (b) 90 degrees. (c) 180 degrees. 3. If there are only two forces acting on an object that moves at a constant velocity, the two forces must have (a) the same direction. (b) the same magnitude. (c) neither the same direction nor the same magnitude. 4. A reference frame rotating at a constant angular speed with respect to an inertial reference frame is (a) another inertial reference frame. (b) a non-inertial reference frame. (c) neither of the above. 5. Any component of a vector (a) is always equal to the magnitude of the vector. (b) is never greater than the magnitude of the vector. (c) is always greater than the magnitude of the vector. 6. The magnitude of the average velocity is (a) always greater than the average speed. (b) never greater than the average speed. (c) always equal to the average speed. 7. For a projectile, at its highest point, (a) the velocity is zero. (b) the vertical component of the velocity is zero. (c) the horizontal component of the velocity is zero. 2 8. The sum of two unit vectors will have a magnitude (a) that is always 1. (b) that is between 0 and 1. (c) that is between 0 and 2. 9. If the magnitude of the momentum of a given object increases to 2 times its initial value, the kinetic energy will increase to (a) 2 times its initial value....
View Full Document

Page1 / 14

ModelFinal - PHY 2011 : Fall 2007 Model Final TOTAL...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online