HW 5-solutions

# HW 5-solutions - virani(sv2339 – HW 5 – moura –(58650...

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Unformatted text preview: virani (sv2339) – HW 5 – moura – (58650) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A bullet is fired straight down from the top of a high cliff. What is the acceleration of the bullet? 1. Less than 9.8 m/s 2 . 2. First faster than 9.8 m/s 2 , then slower. 3. Not enough information to answer. 4. First slower than 9.8 m/s 2 , then faster. 5. Equal to 9.8 m/s 2 . correct 6. More than 9.8 m/s 2 . Explanation: Regardless of whether the bullet is dropped, fired straight up, or fired straight down, it is under the influence of gravitational accelera- tion g = 9 . 8 m / s 2 . 002 (part 2 of 2) 10.0 points What conclusion can be reached about the speed of the bullet? 1. First slower than its initial speed, then faster. 2. Not enough information to answer. 3. Equal to zero. 4. Always slower than its initial speed. 5. Always faster than its initial speed. cor- rect 6. Equal to 9.8 m/s. 7. Equal to its initial speed. 8. First faster than its initial speed, then slower. 9. Equal to 9.8 m/s 2 ....
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HW 5-solutions - virani(sv2339 – HW 5 – moura –(58650...

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