Give a specific example of a system with the energy transformation w→u. in this question w is the work done on the system by the environment, and k and u are the kinetic and potential energies of the system, respectively. any energy not mentioned in the transformation is assumed to remain constant; if work is not mentioned, it is assumed to be zero. select a specific example of a system with the energy transformation shown.
k→δeth

select a specific example of a system with the energy transformation shown.

a. a wood block sliding across a rough horizontal surface and slowing to a stop.

b. a block sliding on level ground, to which a cord you are holding on to is attached

c. a wood block moving across a horizontal rough surface at constant speed

d. a wood block sliding down a rough inclined surface at a constant speed.