Prelim_Exam__1_F04

# Prelim_Exam__1_F04 - Your Name Discussion Instructor's Name...

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Your Name 2 SHORT ANSWER [40 points] Please mark your answers in the spaces provided. 1. [5 points] The distance from the North Pole to the Equator along the Earth's surface is about 10 7 m. If there were enough land area available on the Earth, roughly how long would it take a person walking every day to walk around the world once? (A) 3 weeks (D) 30 years Answer: (B) 3 months (E) 300 years (C) 3 years Please show your calculations: 2. [4 points] Three identical ideal springs, each having spring constant k, are connected as shown. F F k k k What is the effective spring constant of this combination of springs? (A) k/3 (E) 4k/3 (B) k/2 (F) 3k/2 2k/3 (G) 2k (D) k (H) 3k 3. [4 points] A ball that was thrown upward at a speed greater than its terminal speed in the air is now moving upward at a speed equal to its terminal speed. What is the ball's acceleration at this instant?
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## This note was uploaded on 06/01/2008 for the course PHYS 1112 taught by Professor Leclair,a during the Spring '07 term at Cornell.

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Prelim_Exam__1_F04 - Your Name Discussion Instructor's Name...

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