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36_TestBank7-26

# 36_TestBank7-26 - Chapter 2 MOTION ALONG A STRAIGHT LINE 1...

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Chapter 2: MOTION ALONG A STRAIGHT LINE 1. A particle moves along the x axis from x i to x f . Of the following values of the initial and fi nal coordinates, which results in the displacement with the largest magnitude? A. x i = 4 m, x f = 6 m B. x i = 4 m, x f = 8 m C. x i = 4 m, x f = 2 m D. x i = 4 m, x f = 2 m E. x i = 4 m, x f = 4 m ans: E 2. A particle moves along the x axis from x i to x f . Of the following values of the initial and fi nal coordinates, which results in a negative displacement? 3. The average speed of a moving object during a given interval of time is always: 4. Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60 km / h and the other is moving at 40 km / h mph. In how many hours will they meet? 5. A car travels 40 kilometers at an average speed of 80 km / h and then travels 40 kilometers at an average speed of 40 km / h. The average speed of the car for this 80-km trip is: A. 40 km / h B. 45 km / h C. 48 km / h D. 53 km / h E. 80 km / h ans: D Chapter 2: MOTION ALONG A STRAIGHT LINE 7

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6. A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither. The time for this round trip is 2 hours. The magnitude of the average velocity of the car for this round trip is: 7. A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither. The time for this round trip is 2 hours. The average speed of the car for this round trip is: 8. The coordinate of a particle in meters is given by x ( t ) = 16 t 3 . 0 t 3 , where the time t is in seconds. The particle is momentarily at rest at t =
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36_TestBank7-26 - Chapter 2 MOTION ALONG A STRAIGHT LINE 1...

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