Final2006solutions

Final2006solutions - SOLUTIONS Physics 6A Summer 2006 Print Name Final Exam(3-hour exam Two 3x5 cards allowed Dr Nassar MULTIPLE-CHOICE QUESTIONS(2

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

View Full Document Right Arrow Icon
SOLUTIONS Physics 6A - Summer 2006 Print Name: _____________________ Final Exam (3-hour exam --- Two 3x5 cards allowed) Dr. Nassar MULTIPLE-CHOICE QUESTIONS: (2 points each) Choose the best answer. M1. ___A push broom of mass m is pushed across a rough horizontal floor by a force of magnitude T directed at an angle θ , as shown below. The coefficient of friction between the broom and the floor is μ . The frictional force on the broom has magnitude (a) (mg Tsin ) μ+ θ (b) μ− θ (c) (mg Tcos ) θ (d) θ (e) mg μ M2. ___ The graph below shows the velocity versus time for an object moving in a straight line. At what time after time = 0 does the object again pass through its initial position? (a) Between 0 and 1 s (b) 1 s (c) Between 1 and 2 s (d) 2 s (e) Between 2 and 3 s M3. A tennis ball of mass m rebounds from a racquet with the same speed v as it had initially, as shown above. The magnitude of the momentum change of the ball is (a) 2mv sin θ (b) 2mv cos θ (c) 2mv (d) mv (e) 0
Background image of page 1

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

View Full DocumentRight Arrow Icon
M4. ___A block oscillates without friction on the end of a spring as shown above. The minimum and maximum lengths of the spring as it oscillates are x min and x max , respectively. The graphs below represent quantities associated with the oscillation as functions of the length x of the spring. Which graph can represent the total mechanical energy of the block-spring system as a function of x? 5. ___ An automobile moves at constant speed down a hill along the smoothly curved M surface shown below.
Background image of page 2
Which of the following diagrams best represents the directions of the velocity and acceleration of the automobile at the instant that it is at the lowest position, as shown?
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/28/2008 for the course PHYS 6A taught by Professor Mahaashour-abdalla during the Summer '07 term at UCLA.

Page1 / 10

Final2006solutions - SOLUTIONS Physics 6A Summer 2006 Print Name Final Exam(3-hour exam Two 3x5 cards allowed Dr Nassar MULTIPLE-CHOICE QUESTIONS(2

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