We have selected video images from the Apollo 16 mission and analyzed the motion of dust clouds kicked up by the wheels of the Lunar Roving Vehicle (LRV). Applying the equations of ballistic motion, we estimate both the velocity of the dust and the gravitational field strength at the lunar surface. From measurements of the rotation of an LRV wheel, we estimate the speed of the LRV. Such exercises can be useful when discussing ballistic trajectories and angular motion in a high school or introductory level college physics class.

1.
Apollo 16 Preliminary Science Report
,” NASA Manned Spacecraft Center,
1972
, available online at <http://www.hq.nasa.gov/alsj/a16/as16psr.pdf>.
2.
Apollo color television subsystem: Operation and training manual
,” Westinghouse Defense and Space Center, 1971; document courtesy of Stan Lebar.
3.
W. H.
Press
,
S. A.
Teukolsky
,
W. T.
Vetterling
, and
B. P.
Flannery
,
Numerical Recipes in C: The Art of Scientific Computing
, 2nd ed. (
Cambridge U.P.
,
Cambridge, MA
,
1992
).
4.
C.
Howell Mullis
, “
A Study and Analysis of the MSFC Lunar Roving Vehicle Dust Profile Test Program
,” Bureau of Engineering Research Report 139-92, College of Engineering, University of Alabama, 1971, available online at <http://www.hq.nasa.gov/alsj/19720007590_1972007590.pdf>. PDF document courtesy of NASA Technical Reports Server. Experiments suggest that the slip might be more than 20%.
5.
J. R.
Taylor
,
Classical Mechanics
(
University Science Books
,
South Orange, NJ
,
2005
).
6.
See supplementary material at http://dx.doi.org/10.1119/1.3699957 for information on Ballistic motion of dust particles in the Lunar Roving Vehicle dust trails.
7.
The CCLDAS website can be found at <http://lasp.colorado.edu/ccldas/RoosterTail.html>.
8.
Apollo Lunar Surface Journal
, edited by
E. M.
Jones
and
K.
Glover
(Apollo 16—The First EVA—Grand Prix, available online at <http://www.hq.nasa.gov/alsj/a16/a16.trvlm1.html>).

Supplementary Material

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