... in fluids3.7 Forces 273.7 Forces3.7.1 What Forces DoA non-zero force operates to change the speed and/or the direction of motion of aflui parcel. In geophysical flui dynamics, forces are conventionally ... component form, a temporal change of the velocity vector can be formallywritten as:dudt= Fxdvdt= Fydwdt= Fzwhere (Fx,Fy,Fz) are the vector components of a force of certain magnitude anddirection. For ... the absence of forces. If there is a force, on the other hand,there will be a certain change in motion. This is known as Newton’s second law ofmotion.3.7.3 Apparent ForcesApparent forces come into...