Posted by lauren on Monday, October 11, 2010 at 6:40pm.
700,000 = 7 * 10^5 meters above so
r = 7*10^5 + 6.38*10^6 = 70.8*10^5 = 7.08*10^6
m v^2/r = G m M/r^2
v^2 = G M/r
v^2 = 6.67*10-11 * 6*10^24 / 7.08*10^6
v^2 = 5.65 * 10^7 = 56.5*10^6
v = 7.5*10^3 = 7500 m/s
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