3 ms·
“well, they have really heavy boots!” http://www.phys.ufl.edu/~det/phy2060/heavyboots.html http://www.phys.ufl.edu/~det/phy2060/heavyboots.html
by hprotagonist 4y ago
“well, they have really heavy boots!”
http://www.phys.ufl.edu/~det/phy2060/heavyboots.html http://www.phys.ufl.edu/~det/phy2060/heavyboots.html