options
magnitude
attractive
force
air resistance
matter
weight
unbalanced
mass
??? forces act on an object that do not have a sum of zero, so they change the motion of the object.
1 answer
The correct word to fill in the blank is "unbalanced". Unbalanced forces refer to the forces acting on an object that do not cancel each other out, resulting in a net force. This net force causes a change in the motion of the object.