Help would be appreciated :)

What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche? during an avalanche, the( 1 ) energy of the snow on the mountain is converted into ( 2 ) energy as the snow cascades down. ( 1 ) a. elastic b. kinetic c. potential d. radiant ( 2 ) a. chemical b. kinetic c. nuclear d. potential

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)

What was apartheid and how did it restrict the rights of non-whites?