If no force is needed to move an object with a constant velocity along a straight line then,how does it overcome friction and move at all?
If no force is needed to move an object with a constant velocity along a straight line, then either frictional force is absent (like smooth surfaces) or is balanced by another force.
This statement that no force is needed to move an object with constant velocity along a straight line is straight out of a reference book.It was the answer to the question"Is any force needed to move an object along a straight line with constant velocity ?" It is not mentioned that friction is absent .
The answer to the ques. "Is any force needed to move an object along a straight line with constant velocity ?" is "Yes, if object is under the influence of other unbalanced forces and No, if object is not under the influence of unbalanced forces."