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# HW14 - Thevalingam Donald Homework 14 Due midnight Inst...

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Thevalingam, Donald – Homework 14 – Due: Dec 21 2006, midnight – Inst: Eslami 1 This print-out should have 18 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. Please take note of the due date of the as- signment. It is due on Thursday, Decembber 21 at midnight. 001 (part 1 of 1) 10 points An elevator starts from rest with a constant upward acceleration and moves 1 m in the first 1 . 7 s. A passenger in the elevator is holding a 5 . 5 kg bundle at the end of a vertical cord. The acceleration of gravity is 9 . 8 m / s 2 . What is the tension in the cord as the ele- vator accelerates? Answer in units of N. 002 (part 1 of 3) 10 points A dragster and driver together have mass 881 . 2 kg . The dragster, starting from rest, attains a speed of 26 . 8 m / s in 0 . 54 s . Find the average acceleration of the drag- ster during this time interval. Answer in units of m / s 2 . 003 (part 2 of 3) 10 points What is the size of the average force on the dragster during this time interval? Answer in units of N.

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