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Test Bank for Physics for Scientists and Engineers 4th Edition Giancoli

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Physics for Scientists and Engineers, 4e (Giancoli) Chapter 2 Describing Motion: Kinematics in One Dimension 2.1 Conceptual Questions 1) Car A is traveling at twice the speed of car B. ... They both hit the brakes at the same time and undergo identical decelerations. How does the time required for car A to stop compare with that for car B? Answer : 2) Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and undergo identical decelerations. How does the distance required for car A to stop compare with that for car B? Answer : 3) It is possible to have a zero acceleration, and still be moving. Answer : 4) When the velocity and acceleration of an object have the same sign, the speed of the object increases. Answer : 5) When the velocity and acceleration of an object have opposite signs, the speed of the object increases. Answer : 6) The average velocity of a car traveling with a constant acceleration during a certain time interval is equal to the mean of the velocities at the beginning and end of that time interval. Answer : 7) Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled. A) The displacement is either greater than or equal to the distance traveled. B) The displacement is always equal to the distance traveled. C) The displacement is either less than or equal to the distance traveled. D) The displacement can be either greater than, smaller than, or equal to the distance traveled. E) If the displacement is equal to zero, then the distance traveled will also equal zero. Answer : 8) Which statement below about the distance between the starting and ending positions and the displacement between the starting and ending positions is correct? A) The distance between the starting and ending positions is twice the magnitude of the displacement between the starting and ending positions. B) The distance between the starting and ending positions is equal to the magnitude of the displacement between the starting and ending positions. C) The distance between the starting and ending positions is the negative of the magnitude of the displacement between the starting and ending positions. D) The distance between the starting and ending positions is greater than the magnitude of the displacement between the starting and ending positions. E) The distance between the starting and ending positions is less than the magnitude of the displacement between the starting and ending positions. Answer : 9) Which statement is correct about the relationship between the average speed and the magnitude of the average velocity for any motion? A) The average speed is always one-half the magnitude of the average velocity. B) The average speed is always greater than or equal to the magnitude of the average velocity. C) The average speed can be less than, greater than or equal to the magnitude of the average velocity. D) The average speed is always less than or equal to the magnitude of the average velocity ............................................................................................continued.................................................................................................. [Show More]

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