[填空题]
An internal explosion braj79 g0qm+wl reaks an object, initially at rest, into two piece; bim k1e4tcb.s, one of which has 1.5 times the mass of the other. If 7500 J were released in the explosion, how much kinetic energy did each piece acquire? (Let A represent the heavier particle, and B represent m;1t bi4bk. ecthe lighter particle. ) KE'$_A$ = J KE$_B$ = J
