Respuesta :

osprey2015

mom conserved

2x1-2x2= -2 kgm/s before

-1x1+v?x2 = 2v-1 after

-2=2v-1

-1=2v

v=-1/2m/s

the 2kg mass keeps going, the 1kg mass bounces off it

if you bump into someone heavier than you, you go flying ???

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