Question

1. a car accelerates at 3 m/s². if it started at rest, what was its final velocity after 6 s? a) 4 m/s b) 18 m/s c) 8 m/s d) 0.5 m/s
2. an object travels 8 meters in the first second of travel, 8 meters again during the second - second of travel, and 8 meters again during the third second. its acceleration is a) 0 m/s². b) 8 m/s². c) 32 m/s². d) 16 m/s². e) none of the above
3. ten seconds after starting from rest, a car is moving at 40 m/s. what is the cars average acceleration? a) 2.5 m/s² b) 4.0 m/s² c) 10 m/s² d) 40 m/s² e) 0.25 m/s²
4. one possible unit of speed is a) light - years per century. b) kilometers per hour. c) miles per hour. d) all of the above. e) none of the above.
5. while driving south, you approach a gas station in front of you. if you are traveling 30 m/s from your frame of reference, the gas station looks like it is a) moving 30 m/s to the south b) moving 30 m/s to the north c) not moving d) moving 30 m/s to the east

Explanation:

Answer:

(26) B. 18 m/s
(27) A. 0 m/s²
(28) A. 4.0 m/s²
(29) D. all of the above
(30) B. moving 30 m/s to the North