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HW #2-2-solutions - pasha(sep635 HW 2-2 Antoniewicz(56445...

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pasha (sep635) – HW 2-2 – Antoniewicz – (56445) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 5.0 points You’re driving on a straight road (in the + x direction) at a constant speed of 28 m / s. In 11 s, you speed up to 42 m / s to pass a truck. Assuming that your car speeds up at a con- stant rate (constant force by the road on the tires), what is your average x component of velocity v avg ,x during this maneuver? Answer in units of m / s 002 (part 2 of 2) 5.0 points How far do you go during this maneuver? Answer in units of m 003 (part 1 of 3) 4.0 points On a straight road (taken to be in the + x direction) you drive for an hour at v 1 ,x = 55 km / h , then quickly speed up to v 2 ,x = 95 km / h and drive for an additional two hours. How far do you go ( Δ x )? Answer in units of km 004 (part 2 of 3) 3.0 points What is your average x component of velocity ( v avg ,x )?
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