If an unbalanced force does not act on an object in motion, it will keep moving at the same velocity forever. The object will continue to maintain its current speed and direction until acted upon by an external force.
If an unbalanced force does not act on an object in motion, it will continue to move at the same velocity forever.
If an object is in motion and no unbalanced force acts on it, then according to Newton's first law of motion, the object will keep moving at the same velocity forever. This is known as the law of inertia. Inertia is the tendency of an object to resist any change in its state of motion. In the absence of any external force, the object will continue moving with the same speed and in the same direction. Hence, the correct answer is: it will keep moving at the same velocity forever.
