An object is released from rest at a height H near and above the surface of Earth. As the object falls toward the surface, Earth's atmosphere exerts a resistive force on the object such that it reaches a terminal velocity before it reaches the ground. Which of the following claims is true? Select two answers.
А
The system consisting of only the object is an open system.
B
Earth's atmosphere does negative work on the object as it falls toward the surface.
С
The change in the object's kinetic energy from the instant it is released from rest, to the instant it reaches terminal velocity, is zero.
D
The total mechanical energy of the object-Earth system remains constant at all times in which the object is in motion.