Question

Your older brother tells you his paper airplane has inertia. What does this mean?It has too much resistance to fly more than a few feet from his hand .It is too heavy to stay in the air for more than a few seconds. It will require a lot of force to get it to fly .It will stay in flight unless something stops it, or it will stay still unless something moves it

Answer 1

The correct choice is: "It will stay in flight unless something stops it, or it will stay still unless something moves it."

Inertia is an object's tendency to resist changes in its motion. That means an object at rest stays at rest and an object moving at constant velocity keeps moving that way unless a net external force (like friction, air resistance, or a push) acts on it.