Two charged particles are projected into a region where a magnetic field is directed perpendicular to their velocities. if the charges are deflected in opposite directions, what are the possible relative charges and directions?

The bearing could be the below: 
oppositely charged, same initial direction 
same charge, opposite initial direction

You can decide by utilizing your correct hand and put your fingers toward the attractive field (North to South). Thumb toward present or charged molecule. The course of your palm will demonstrate the heading of compelling set on a decidedly charged molecule and the bearing of the back of your hand will demonstrate the bearing of a contrarily charged molecule.

The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.