In physics, When a force on something, and make a displacement, it makes work.The unit of work is the newton-metre or joule (J).
Work: W=Fd
Force: F=W/d
Distance: d=W/F
where, W =Work, F = Force, D = Distance.
For example, F = 2, D = 6, then Work = FD = 2*6 = 12 J.