Velocity Micro Vector

Question AP Physics B?

The area shown is the limit of a mag-netic field directed in the positive z direc-tion. An electron with speed along the x-axis enters the field coordinates (x,, y) = (-5 m, 0) and the outputs of 0.51 seconds in the microwave after point A has coordinates (x, y) = (0, 5 m). The mass of the electron is 9.109×10 ^ -31 kg and its charge is -1.602 x 10-19 C. What is the magnitude of vector B? Answer in units of micro Tesla. Here is the picture: http://i112.photobucket.com/albums/n197/lily1070/magnetfield.jpg

are you sure that the initial velocity is not given?

Project Terminal Velocity – 6 cells of LiPo in a Micro-DT