m = mass of the fly traveling = 0.27 kg
v = velocity of the fly traveling = 128 m/s
P = momentum of the fly traveling
we know that , momentum of an object is given as
P = m v where m = mass of object , v = velocity of object
so for the fly , the momentum is given as
P = mv
inserting the values
P = (0.27) (128)
P = 34.6 kgm/s
hence the momentum of fly comes out to be 34.6 kgm/s