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Unformatted text preview: Question 1: Score 5/5 Your answer: Your response The tangential and radial accelerations of an object moving in a circular path are always perpendicular. Question 2: Score 5/5 A rifle is aimed horizontally at the center of a large target 56 m away. The initial speed of the bullet is 220 m/s. What is the distance from the center of the target to the point where the bullet strikes the target? Your Answer: 32 cm Question 3: Score 5/5 An object moving in a circular path must have non-zero acceleration. Your Answer: True Question 4: Score 0/5 Two balls, projected at different times so they don?t collide, have trajectories A and B, as shown below. Which statement is correct? Your Answer: v iA must be greater than v iB Correct Answer: Ball A is in the air for a longer time than ball B Question 5: Score 5/5 A river has a steady speed of 0.12 m/s. A student swims downstream a distance of 1.1 km and returns to the starting point. If the student swims with respect to the water at a constant speed returns to the starting point....
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- Spring '08