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Motion in 1 & 2 Dimensions REVIEW

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What is the displacement of an object with a v vs. t graph of: A. 15 m B. 15 cm C. -15 m D. 0.83 m E. -0.83 m

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What is the acceleration of an object with a v vs. t graph of: A. 15 m/s 2 B. 15 cm/s 2 C. -15 m/s 2 D. 0.83 m/s 2 E. -0.83 m/s 2

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What best describes the motion of the object during the time interval of 4.0 s – 6.0 s? A. Constant forward velocity B. Constant negative velocity C. No motion D. Constant acceleration

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A tortoise runs 4 meters forward in 3.5 sec and then turns around (instantaneously) and runs back to where it started in another 4.0 sec. What is the tortoise's average velocity? A. 0 m/s B. 1.1 m/s C. 2.1 m/s D. -2.1 m/s

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A tortoise runs 4.0 meters forward in 3.5 sec and then turns around (instantaneously) and runs back to where it started in another 4.0 sec. What is the tortoise's average speed? A. 0 m/s B. 1.1 m/s C. 2.1 m/s D. -2.1 m/s

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A man walks 3.5 m North, 6.9 m West and then 2.4 m South. What is his final displacement? A. 12.8 m B. 7.0 m at 81 o N of W C. 7.0 m at 81 o W of N D. 7.0 m at 9 o S of E

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Which of the following is an example of projectile motion? A. Wonder Woman flying through the air. B. A volleyball pounded over the net. C. A paper airplane gliding through the air. D. An airplane traveling from LA to Dallas.

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A rubber suction cup is fired horizontally from a toy gun, and another rubber suction cup is dropped simultaneously from the same height. Neglecting air resistance, which bullet hits the ground first? A. The fired one. B. The dropped one. C. Both hit at the same time.

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A battleship simultaneously fires two shells at enemy ships. If the shells follow the trajectories shown, which ship gets hit first? A. A will be hit first. B. B will be hit first. C. Both will be hit at the same time. D. It depends on the actual angles.

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Two arrows are launched with the same velocity. One is launched straight up and the other is launched at 65 o. Which hits the ground first? A. The one launched straight up. B. The one launched at 65 o. C. Both hit at the same time. D. Need more information.

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Does a ball dropped out of the window of a moving car take longer, shorter, or the same amount of time to reach the ground as one dropped at the same height from a car at rest? A. Longer B. Shorter C. The same

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One penny is thrown upwards at a velocity, V, from the top of a building and another penny is thrown downwards from the top of the same building at a velocity of –V. Which hits the ground first? A. The one thrown upwards. B. The one thrown downwards. C. They both hit at the same time.

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One penny is thrown upwards at a velocity, V, from the top of a building and another penny is thrown downwards from the top of the same building at a velocity of –V. Which hits the ground with the largest final velocity? A. The one thrown upwards. B. The one thrown downwards. C. The final velocities are the same.

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Which ball spends the most time in the air? A. Ball A B. Ball B C. They are the same.

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Which ball has the greater launch speed? A. Ball A B. Ball B C. They are the same.

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Assuming air resistance is negligible, what happens to the horizontal velocity of a projectile after it is released? A. Velocity decreases. B. Velocity increases. C. Velocity remains constant.

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A passenger on a bus moving east sees a man standing on a curb. From the passenger’s perspective, the man appears to be… A. Not moving. B. Moving East with a speed equal to the bus’s speed. C. Moving North with a speed equal to the bus’s speed. D. Moving West with a speed equal to the bus’s speed.

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A piece of candy is dropped by a little girl running across the yard. From an observer’s perspective, the candy appears to fall A. Straight down. B. Parabolically forward. C. Parabolically backward. D. Straight backward.

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