Answer
Q1) They add up
Q2) They add up
Q3) They cancel out
Q4) They cancel out
Work Step by Step
Q1) The y component of the forces are of the same magnitude and have the same direction
Q2) The y component of the forces are of the same magnitude and have the same direction
Q3) The y component of the forces are of the same magnitude and have the opposite directions
Q4) The y component of the forces are of the same magnitude and have the opposite directions