Thermo help: Internal, kinetic and potential energy change in falling rock?

Consider a stone having a m of 10 kg which is initially at an elevation of 10.2 m (state 1). The stone is now dropped on to the ground. uming that the stone and the surrounding air are at the same temperature during the drop, and that there is no work done or supplied, determine ΔU, ΔKE, and ΔPE using the first law for a closed system when the stone is about to hit the ground (state 2). ume a gravitational acceleration of 9.81m /s2.