Velocity from using only weight mass and kilogram force?

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pisola
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i was wondering about counting velocity only from weight mass and from kilogram force (like force from rocket thruster)

ex: there's a rocket in space, its weight is 63 metric tons and the rocket thruster output is 128 tons. i won't include the G force, cause i want to look the velocity when it's in space.

is there a formula to count velocity from that kind of category? of course the velocity would be km/h

to make it simple for the kilogram force, i try to convert 128 tons force to Newton, which is 125,5251.2 Newton
 
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SteamKing said:
F = ma everywhere

um, can you explain...?

i'm a little idiot to physics, so can you please explain step by step how can get that formula to fit the description above...?
 
Force in Newtons, Mass in kilograms and acceleration in metres per second squared.
The velocity will depend on how long the force has been applied. V = at

BTW kilogram or a tonne is not a force. A force is measured in Newtons in SI units.
What do you actually want to know and what do you mean by "count velocity"?