A 50 kg bag of sand at 25 C falls 10 m onto the pavement and comes to an abrupt Stop. Neglect any transfer of heat between the sand and the surroundings and assume that the thermal capacity of the sand is so large that its temperature is unchanged.
a) What is the dissapative work done on the sand?
b) What is the change in internal energy in the sand?
c) What is the entropy change associated with this change in U at a constant T.