The two similar point charges (q = +4.80 x 10-6 C) are fixed at opposite corners of the square whose sides encompass a length of around 0.600 m. A test charge (q0 = -1.90 x 10-8 C), having a mass of 5.30 x 10-8 kg is released from rest at one of the corners of the square. Find out the speed of the test charge if it reaches the center of the square.