What happens to the motion of an object when an unbalanced force is applied to it?

When an unbalanced force is applied to an object, the following happens:

1. Change in State of Motion: If the object was initially at rest, it will start moving. If it was already moving, its speed or direction of motion might change. This is due to Newton's first law of motion, which states that an object will remain at rest or move in a straight line at a constant speed unless acted upon by an unbalanced force.

2. Acceleration: The object will accelerate in the direction of the unbalanced force. This is according to Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

3. Change in Shape: In some cases, the object might also change its shape due to the application of the unbalanced force.

In conclusion, an unbalanced force will cause a change in the motion of an object, either by initiating movement, changing the speed or direction of movement, or altering the shape of the object.