Answer:
"we both attract each other with the same force but we know that attraction between two bodies depends upon their mass, greater the mass of two bodies is the force of attraction between them"(got this off the internet).
first object gors highest
second object goes lowest.
Picture 1 and 2 or am I wrong and it's not that obvious.
Well idk if this helps but the formula to solve acceleration is
a=F/m=(100kg)=1.0m/s 2