In an explosion, a body breaks up into two pieces of unequal masses. In this (a) both parts will have numerically equal momentum (b) lighter part will have more momentum (c) heavier part will have more momentum (d) both parts will have equal kinetic energy

  (a) If m1, m2 are masses and u1, u2 are velocity then by

conservation of momentum m1u1 + m2u2 = 0