Question

unbalanced forces cause an object to change its ____________. temperature color velocity size

Explanation:

According to Newton's first law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Unbalanced forces lead to a change in the object's state of motion. Velocity is a measure of an object's speed and direction of motion. Temperature is related to the thermal state of an object, color is a visual property, and size is a geometric property. None of these (temperature, color, size) are directly related to the effect of unbalanced forces on an object's motion as per the laws of physics.

Answer:

velocity