What causes a change in an object's motion?

Question

balanced force
unbalanced force
acceleration
inertia

Answer 1

Both unbalanced force and acceleration can cause a change in an object's motion. An unbalanced force is a force that is not counteracted by an equal and opposite force, causing the object to move in the direction of the greater force. Acceleration, on the other hand, is the rate at which an object's velocity changes, which can be caused by the application of an unbalanced force. Inertia, the tendency of an object to resist changes in its motion, does not directly cause a change in an object's motion, but it can affect how much force or acceleration is required to produce a change.