It is things at rest stay arrest things that are in motion stay in motion. Example is when you have a arrow at rest it stays at rest but when you pull back the arrow it goes flying and it stays in motion.
Newton first law
To move a mass you need a force example is when we push catapults it is really heavy so we need more people more mass to push it.
Newton second law
For every action there is opposite and = reaction example is when the joker juggle he throws the balls in the air and they come down to catch them and he that over and over again.