Posted by tionne on Tuesday, November 13, 2012 at 11:08pm.
Since they exert equal and opposite forces on each other,
M1*a1 = -M2*a2
a2 = -a1*(45/65)
= -1.38 m/s^2
Subscript 2 denotes male; 1 denotes female.
The minus sign means the accelerate in opposite directions.
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