When balanced forces follow up on an object, the object won't move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces.
The answer & explanation for this question is given in the attachment below.
When in the melting process particles start to move more freely when in the freezing process particles tend to slow and vibrate in place
Echo sounding is the key method scientists use to map,uses sound waves bounced off the ocean bottom.
