Kilometre per second
(Redirected from Km/s)
kilometre per second is an SI derived unit of both speed (scalar) and velocity (vector), signified by the symbol km/s or km s-1. It is equal to 1,000 m/s.
1 km/s is about the top speed of a sub-orbital spacecraft.
A typical value for the specific impulse of current rockets is 4.5 km/s.
See also
- escape velocity
- delta-v budget.
- Hohmann transfer orbit for some examples of orbital speeds
Categories: SI derived units of velocity