Question

when will the motion of an object be unchanged?
the forces are unbalanced.
the forces are not in equilibrium.
the forces are balanced.
there is a positive net force.

Explanation:

To determine when an object's motion is unchanged, we use Newton's first law (law of inertia), which states that an object at rest or in uniform motion will remain in that state unless acted upon by a net external force.

• If forces are unbalanced (or not in equilibrium, or there is a positive net force), there is a net force, so the object's motion (speed or direction) will change.
• If forces are balanced, the net force is zero, so the object's motion (speed and direction) remains unchanged (it stays at rest or moves at a constant velocity).

Answer:

The forces are balanced.