as a person pushes a box across a floor, the energy from the persons moving arm is transferred to the box…

as a person pushes a box across a floor, the energy from the persons moving arm is transferred to the box, and the box and the floor become warm. during this process, what happens to energy? it is increased. it is conserved. it is decreased. it is created.
Answer
Brief Explanations:
According to the law of conservation of energy, energy cannot be created or destroyed, only transferred or transformed. In this case, the mechanical - energy from the person's arm is transferred to the box and some is transformed into heat due to friction between the box and the floor. So the total energy in the system is conserved.
Answer:
It is conserved.