In a science fiction novel two enemies, Bonzo and Ender are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of + 1.5 m/s, while Ender recoils with a velocity of - 2.5 m/s.
(a) Without doing any calculations, decide which person has the greater mass. Give your reasoning.
(b) Determine the ratio mBonzo/mEnder of the masses of these two enemies.