Dammit, why does a plank of wood with some Kerbals on it explode? I mean I craft the simplest rocket I can think of, a booster and the plank and it explodes before the booster does.
According to Wolfram Alpha: ~~ 1.1 × escape velocity at the 1-atmosphere level of Jupiter ( 59540 m/s ) ~~ 0.95 × Helios 2 solar probe speed (fastest man-made object) (~~ 70200 m/s ) 148540 mph (miles per hour)