You can adjust the damping kv to -1.8 to give a response that does not overshoot.
But now apply a disturbance and see how 'soft' the control is.
Now try kx = -100 and kv = -50.
The block stops as though it has hit a rock.
Small disturbances have little effect - but of course a force of
1.2 Newton will overcome the motor and drive the block right off.
