Four electrons are located at the vertices of a square, one at each vertex. The length of a side of the square is 1.0 nm. What is the magnitude of the initial acceleration of every electron? The mass of the electron is 9x10-31 kg. O 9x1020 m/52 O 3x1020 m/s2 O 5x1020 m/s2 O 1.5x1020 m/52