Question

an object at rest will stay at rest unless an ______ forces acts upon it
○ balanced
○ unbalanced

Explanation:

This is related to Newton's first law of motion. An object at rest stays at rest (or in uniform motion) unless an unbalanced force acts on it. Balanced forces would result in no net force, so the object remains at rest. Unbalanced forces create a net force, causing a change in motion. So the correct term is "unbalanced".

Answer:

unbalanced (the option with "unbalanced" text)