PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
In straight-line motion along the x-axis, an object’s linear momentum is written as px=mvx. Which of the following quantities most directly determines whether px is positive or negative?
(a) The magnitude of the object's mass
(b) The direction of the net external force acting on the object
(c) The sign chosen for the x-axis in the coordinate system
(d) The sign of the object's displacement from the origin