smithdem00059 smithdem00059 04-10-2022 Physics Answered 2. A 15-N net-force is applied for 6.0 s to a 12-kg box initially at rest. What is the speed of the box at the end of the 6.0-s interval A) 1.8 m/s B) 15 m/s C) 3.0 m/s D) 30 m/s E) 7.5 m/s