g. __________ A continuous change of position
KEY TERMS
1. physics
2. position
3. motion
4. scalar
5. vector
6. average speed
7. distance
8. instantaneous speed
9. average velocity
10. displacement
11. instantaneous velocity
12. acceleration
13. average acceleration
14. acceleration due to gravity
15. free fall
16. terminal velocity
17. centripetal acceleration
18. projectile motion
g. __________ A continuous change of position
KEY TERMS
1. physics
2. position
3. motion
4. scalar
5. vector
6. average speed
7. distance
8. instantaneous speed
9. average velocity
10. displacement
11. instantaneous velocity
12. acceleration
13. average acceleration
14. acceleration due to gravity
15. free fall
16. terminal velocity
17. centripetal acceleration
18. projectile motion
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Related questions
Elisha Graves Otis invented the elevator brake in the mid- , making it possible to build tall skyscrapers with fast elevators. Today’s skyscrapers are a large fraction of a mile tall; for example. Taipei in Taiwan has stories and is ( miles) tall. The top speed of the elevator in the Taipei tower is roughly three times greater than the ascent rate of a commercial jet airplane. The position and time data in the table are based on such an elevator.
a. Working in SI units, make a position-versus-time graph for the elevator.
b. Describe the motion of the elevator in words.
c. Find the highest speed of the elevator. When is the elevator going at this speed?
d. What sort of considerations would the engineers need to make to ensure the comfort of the passengers?
Position (stories) |
Time (s) |
0.0 | 0 |
0.3 | 1 |
1.1 | 2 |
2.5 | 3 |
4.4 | 4 |
6.8 | 5 |
9.8 | 6 |
13.1 | 7 |
16.4 | 8 |
19.6 | 9 |
22.9 | 10 |
26.2 | 11 |
29.5 | 12 |
32.7 | 13 |
36.0 | 14 |
39.3 | 15 |
42.5 | 16 |
45.8 | 17 |
49.1 | 18 |
52.4 | 19 |
55.6 | 20 |
58.9 | 21 |
62.2 | 22 |
65.5 | 23 |
68.7 | 24 |
72.0 | 25 |
75.3 | 26 |
78.5 | 27 |
81.6 | 28 |
84.2 | 29 |
86.5 | 30 |
88.2 | 31 |
89.6 | 32 |
90.0 | 33 |
90.0 | 34 |
90.0 | 35 |
90.0 | 36 |