How fast are you moving right now?

Orbit of the Earth around the Sun

radius of the earth’s orbit = A.U. = 1.5x108 km

1 year = 3.16x107 sec

v = d/t = 2?A.U./year

= 9.4x108 km/day / 3.16x107 s/day

= 30 km/s ~ 67 000 mph

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