A brick of mass M sits on a rubber pillow of mass m . Together they are sliding to the right at constant velocity on an ice-covered parking lot.
(a) Draw a free-body diagram of the brick and identify each force acting on it.
(b) Draw a free-body diagram of the pillow and identify each force acting on it.
(c) Identify all the action-reaction pairs of forces in the brick-pillow-planet system.