julia pulls her pet bruno who is standing on a sled in a straight horizontal path southwards through the snow. bruno does not slip and is not touching the rope that is attached to the sled. What are the forces acting on bruno when they are slowing down in the southwards direction? Ignore air resistance.

O Normal force up, gravity down, static friction northward, kinetic friction southward O Normal force up, gravity down, static friction northward Normal force up, gravity down Normal force up, gravity down, kinetic friction northward O Normal force up, gravity down, static friction southward, kinetic friction northward