When a body moves with uniform velocity along a straight line, what unbalanced force acts upon it?
If an object is moving at constant velocity (constant speed in a straight line), according to Newton’s First Law*, no unbalanced forces act upon this body. However, BALANCED forces could be acting on the body – but as they are balanced, they do not change the object’s velocity or shape (they cancel each other out). *Newton’s First Law states that an object at rest will remain at rest unless acted upon by an unbalanced force, and that an object moving with a constant velocity (constant speed in a straight line) will continue to move with a constant velocity, unless acted upon by an unbalanced force.
