A system has both thermal energy and chemical potential energy. According to the law of conservation of energy, which statement describes the total
energy of this system?
A. It will decrease over time as chemical potential energy is
transformed into thermal energy
O B. It will increase as thermal energy is created from chemical
potential energy
C. It will remain constant because the total amount of thermal
energy plus chemical potential energy stays the same.
D. It will decrease as thermal energy is transferred out of the system.

0.55x745.7j and a calculator

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

unbalanced force

explanation: