A charge of 2.50 is held fixed at the origin. A second charge of2.50 is released

A charge of 2.50 is held fixed at the origin. A second charge of2.50 is released from rest at the position (1.25 0.570 ). If themass of the second charge is 2.85 what is its speed when it movesinfinitely far from the origin? v= m/s