Rocket acceleration

[dau360]

I need help on the question: Why can a rocket accelerate into space when the force of takeoff remain the same?

[brainfart94]

Why not? I'm sure it doesn't stay the same. That way it wouldn't work, right? Just some common sense

[insane_alien]

the force does stay quite level.

 

but you need to ask, why would that stop it accelerating?

[swansont]

Assuming the force from the rocket stays constant, the acceleration should increase, because the force of gravity decreases, and because the mass decreases. F = ma

 

Even if the reference is to the net force, the acceleration increases as the mass decreases. If it's the specific force (i.e. F/m) that remains constant, then acceleration would remain constant.