Mechanical feedback from the outflow. Panel a: momentum ejected by the magnetically driven outflows within the cloud core, for the high-resolution series on grid ×8. Panel b: time-averaged momentum flux through a hemisphere of radius r = 15 000 au for the same simulation series. Panel c: total momentum ejected by the magnetic outflows, normalized to the mass of the cloud core, as a function of the fraction of the free-fall timescale elapsed, for two different masses of the cloud core. Panel d: ejection-to-accretion rate measured using spheres of three different radii.