Physics QUIZ4 - Version 114/ABDAC QTest#4 Antoniewicz(57380 This print-out should have 3 questions Multiple-choice questions may continue on the

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Version 114/ABDAC – QTest #4 – Antoniewicz – (57380) 1 This print-out should have 3 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 of 2) 10.0 points A 4 . 6 kg mass undergoes an acceleration given by va = a x ˆ ı + a y ˆ  , where a x = 1 . 3 m / s 2 and a y = 5 . 6 m / s 2 . ±ind the magnitude oF the resultant Force. 1. 16.9482 2. 16.5232 3. 14.1205 4. 9.71527 5. 28.8582 6. 24.4564 7. 26.445 8. 10.7418 9. 6.79671 10. 14.411 Correct answer: 26 . 445 N. Explanation: The magnitude oF the acceleration is a mag = r a 2 x + a 2 y = r (1 . 3 m / s 2 ) 2 + (5 . 6 m / s 2 ) 2 = 5 . 74891 m / s 2 . This gives the resultant Force as F mag = m a mag = (4 . 6 kg) (5 . 74891 m / s 2 ) = 26 . 445 N . 002 (part 2 of 2) 10.0 points ±ind the direction oF the resultant Force. Express your answer as the counterclock- wise angle From the positive x -axis to the resultant Force. 1. 45.7848
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This note was uploaded on 03/01/2011 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas at Austin.

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Physics QUIZ4 - Version 114/ABDAC QTest#4 Antoniewicz(57380 This print-out should have 3 questions Multiple-choice questions may continue on the

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