The fact that your eyes rotate in their sockets, either getting closer or farther from each other, as an object changes its distance from you is a binocular distance cue called .

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.