The following image shows one type of light technology.
What technology is shown above and what is one of its uses?
laser cutting through metal
LED; illuminating a television screen
fluorescent light; illuminating a dark room
fiber optic cable; moving light through small openings

Gravity, from the center of mass of the box, extending downward normal force, from the floor under the box, extending upward, equal to gravity push force, acting at a point on the box, extending in the direction of motion friction, acting at any point on the box directly opposite the push, extending directly opposite to the motion

Can you give more detail  

D. it is decreased by a factor of 9