Physics Review Question Unit: Mechanics Year: 1997 Question#: 9 Question: A 1,000-kilogram car traveling with a velocity of +20. meters per second decelerates uniformly at 5.0 meters per second2 until it comes to rest. What is the total distance the car travels as it decelerates to rest? (1 ) 10. m (2 ) 20. m (3 ) 40. m (4 ) 80. m What is this question really asking? Explanation by: Chris B. [ Return to question menu ] Answer 1 10. m INCORRECT For this question you must use the formula return to top Answer 2 20. m INCORRECT For this question you must use the formula return to top Answer 3 40. m CORRECT You correctly used the formula return to top Answer 4 80. m INCORRECT this answer is twice the correct answer, this is often used to throw off people, but is still the wrong answer. You made a math error by forgetting about the 2 in the formula return to top What's this question really asking? How far does the car go before stopping? return to top |
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