Based on Friction and Normal Force:?

Question

How do the magnitudes of the applied force and the frictional force compare to each other for a toy duck waddling across a floor at a constant speed?

Answer 1

They must be equal for the duck to waddle at a constant speed.

v = 0 implies a = 0, so that the total forces are zero

Since the only forces acting are the applied force and friction, we have

Fapply - Ffriction = 0

Fapply = Ffriction