A worker uses a rope to pull a loaded sled south along a straight, level snow track. The sled reaches a patch of wet, slushy snow. The worker keeps pulling south, but the sled's speed decreases steadily while it continues to move south. The only horizontal forces on the sled are the pull of the rope and friction.
Which statement about the horizontal forces on the sled on the slushy snow is correct?
The pull of the rope is greater than the friction.
The friction is greater than the pull of the rope.
The friction acts south, the same way as the pull.
The pull of the rope is equal to the friction.