NGSS
Balanced force
Forces that are equal but in opposite directions. Balanced force. Balanced force means that things don't move because the pushes and pulls are equal.
Force explained in an easy to understand way.
Motion explained in an easy to understand way.
Unbalanced force
Forces acting on an object to cause a change in motion. Unbalanced force. An unbalanced force is when one side pushes or pulls harder and makes something move.
Velocity explained in an easy to understand way.