Answer
E={$F_{2}$,$F_{4}$}
F={$F_{2}$,$F_{4}$}
G and H are impossible.
Work Step by Step
Kinetic energy is a scalar quantity, so it can never be negative and the direction of travel is irrelevant when calculating kinetic energy. $F_{2}$ and $F_{4}$ are equal to each other and greater than the other two forces, so they are plot E with greater kinetic energy. $F_{2}$ and $F_{4}$ are equal and less than the other two so they are plot F.
