retarding force

[tolga]

does constant retarding force or opposing constant forces mean Fnet=o

[TrueTears]

no

[superflya]

constant acceleration doesnt mean . for instance it can say, a constant acceleration of and ull have a force of .

[appianway]

Take Newton's 2nd law as F=ma (because we'll presume that there's no chance in mass here). This means that, rearranging, F/m = a. Therefore if F is constant, a won't change - in other words, acceleration is constant.

Constant velocity, on the other hand, occurs when a = 0, therefore meaning that F = 0. This can occur when you have two forces opposing each other (and no other forces acting) of equal magnitude, which is what I think you meant in the 2nd part of what you said.

[QuantumJG]

does constant retarding force or opposing constant forces mean Fnet=o

No constant retarding force means that a force that opposes the motion of the object is constant. ΣF = 0 only occurs in statics or if the velocity the object is moving at is constant.