The most difficult balaning problem that human normally face in life involves learning to

The most difficult balancing problem that humans normally face in life involves learning to walk !  Walking on only two legs is a process of repeated controlled falling.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

it is called kinetic energy