# quiz 1 - c 500 000 6 The equation for the change of...

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Name: Physics 205A Quiz 1-1 1. The density of an object is defined as: b. the amount of mass for each unit of volume. 2. An automobile manufacturer claims that its product will, starting from rest, travel 0.40 km in 9.0 s. What is the magnitude of the constant acceleration required to do this? a. 9.9 m/s 2 3. Which statement is true about the unit vectors , and ? . b. The angle between any two is 90 degrees. 4. A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = 30 cm. What is the acceleration of the particle? a. 7.3 cm/s 2 5. If you drove day and night without stopping for one year without exceeding the legal highway speed limit in the United States, the maximum number of miles you could drive would be closest to:

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Unformatted text preview: c. 500 000. 6. The equation for the change of position of a train starting at x = 0 m is given by . The dimensions of b are b. LT − 3 7. The position of a particle as it moves along the x axis is given by x = 15e − 2 t m, where t is in s. What is the acceleration of the particle at t = 1.0 s? c. 8.1 m/s 8. If = [15, 80 ° ] and , what is the magnitude of ? c. 32 9. If = [10 m, 30 ° ] and = [25 m, 130 ° ], what is the direction of the sum of these two vectors? c. 107 ° 10. Starting from one oasis, a camel walks 25 km in a direction 30 ° south of west and then walks 30 km toward the north to a second oasis. What distance separates the two oases? c. 28 km...
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## This note was uploaded on 03/06/2011 for the course PHYS 205A taught by Professor Scott during the Fall '10 term at SIU Carbondale.

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quiz 1 - c 500 000 6 The equation for the change of...

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