Qstnid -I-7-an Object Is Placed Far Away From All The Objects That Can Exert Force On It. A Frame Of Reference Is Constructed By Taking The Origin And Axes Fixed In This Object. Will The Frame Be Necessarily Inertial? - 05: Newton's Laws Of Motion

with Solutions -

#7
An object is placed far away from all the objects that can exert force on it. A frame of reference is constructed by taking the origin and axes fixed in this object. Will the frame be necessarily inertial?
Ans : Yes, if the force on the object is zero, its acceleration w.r.t. all the other objects will we zero. So, the frame will necessarily be an inertial frame.