This question is about an actual satellite (The Upper Atmosphere Research Satellite) that stopped functioning, and then fell back to earth on Sept. 23, 2011. The following table shows the satellite's altitude above the earth at the end of its fall. Day 55 is Sept. 23. Days 0 through 46 are not shown. Rows are numbered for convenience.
Row Day (Day 0=8/1/2011) Altitude (km)
1 47.0 252
2 47.5 250
3 48.0 248
4 48.5 245
5 49.0 241
6 49.5 239
7 50.0 234
8 50.5 229
9 51.0 225
10 51.5 220
11 52.0 216
12 52.5 209
13 53.0 200
14 53.5 190
15 54.0 172
16 54.5 145
17 55.0 0
Find the average (vertical) velocity of the satellite between Day 49 and Day 52.5. Enter your answer as an exact fraction, no simplification required.
average vertical velocity =
