I am really confused with this problem and really don't know where to start. Do I figure the two forces separate first? Also ,I wouldn't think the proton is going to go in a straight line.
Homework Statement
A proton enters a region in which there is a magnetic field B=0.2T pointing along the positive z axis,and an electric field E=7.4 N/C pointing along the positive y axis. If we want the proton to continue traveling in a straight line without changing speed,what should its...