Answer:
When it comes to laws of motion, inertia is one of the greats. Inertia resists change in motion. Objects want to stay in rest or motion unless an outside force causes a change. For example, if you roll a ball, it will continue rolling unless friction or something else stops it by force. You can also think about the way that your body keeps moving forward when you hit the brake on your bike. Inertia comes in different types, check them out.
