[PapaBear3625]

The definition of newton is "In plain English, 1 newton of force is the force required to accelerate an object with a mass of 1 kilogram 1 meter per second per second".

If you have a space probe weighing 1000kg, being pushed at a thrust of 5.4 newtons, after 1 second it will have accelerated 5.4/1000 m/s, which is not much. But after a day, then it will have accelerated to a velocity of (5.4*3600*24)/1000 = 467 m/s

[BwanaNdege]

467 m/s = 1045 mph