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PHYS 2A Sample Midterm_2

# PHYS 2A Sample Midterm_2 - PHYS 2A01 SAMPLE MIDTERM 1...

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PHYS 2A-01    CLOSED BOOK SAMPLE MIDTERM 1        SPRING 2009 Circle the best answer for the following problems YOU MUST SHOW YOUR WORK TO GET FULL OR PARTIAL CREDIT 1. A furlong is a distance of 220 yards. A fortnight is a time period  of two weeks. A racehorse is running at a speed of 5.00 yards per  second. What is his speed in furlongs per fortnight? a) 27,500   b) 13,700  c) 6,220  d) 2,750  e) 1,100 2. An object moves 20 m east in 30 s and then it returns to its  starting point taking an additional 50 s. If west is chosen as the  positive direction, what is the average velocity of he object?        a) 0.50 m/s b) -0.50 m/s c) 0.32 m/s d) 0 m/s e) 0.53 m/s  3. An object moves 20 m east in 30 s and then it returns to its  starting point taking an additional 20 s. If west is chosen as the  positive direction, what is the average speed of he object?

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