N210: Introductory Physics Olympiad

Mondays, 5:45 - 7:45 PM, University Tower Classroom

• Fall Session: September 14, 2009 to November 16, 2009
• Winter Session: November 30, 2009 to December 14, 2009; January 4, 2010 to February 15, 2010
• Spring Session: March 1, 2010 to March 29, 2010; April 12, 2010 to May 10, 2010

Homework Solutions

(Note: each solution is followed by a percentage, which is the percent of students who got the correct answer.)

1.1: Units and Scientific Notation

1a. 1.156 x 10⁶ [100%]

1b. 2.18 x 10² [100%]

1c. 6.8 x 10^-3 [100%]

1d. 2.7635 x 10¹ [100%]

2a. 3 [86%]

2b. 4 [71%]

2c. 3 [86%]

2d. 2 [this answer is incorrect on the answer key]

3. 1.496 x 10¹¹ m [29%]

4. 1.7372 x 10⁵ s [57%]

5. 2.55 m [43%]

6. B [100%]

7. D [71%]

8. B [86%]

9. B [71%]

10. B [86%]

Class average: 74%

1.2: Velocity and Acceleration

1. 61 m [71%]

2. 2.2 m/s², 100 m [79%]

3. -2.35 m/s² [0%]

4. 161 s [29%]

5. -12.5 m/s² [0%]

6. 6.1728 s [0%]

7. A [100%]

8. B [100%]

9. A [29%]

10. E [14%]

Class average: 42%