Easy question why fps system isn't used?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.