A5 n force pushes on the right side of a box. at the same time, a 10 n force pushes on the left side of the box. what happens to the box? a. it is moved to the right by the 10 n force. b. it is moved to the right by a combined force of 15 n. c. it is moved to the right by a net force of 5 n. d. the forces pushing on both sides cause it to remain at rest.