Hi,I have thought about this question for the whole night but I couldn't solve it. I want to ask why we need at least 2 forces(they are in opposite direction) to separatre an object. 1 force or several forces act at the same direction could never divide an object.(but the object will accelerate) Why?Can anyone explain in terms of forces acting on the substance? OK.Imagine you are in the outer space now,so that it is frictionless. Is is possible to cause a fracture on an object if only a single force is acted on it?Assume the force is very large.Or the object will just accelerate but not break?