The First Law is about inertia; objects at rest stay at rest unless acted upon and objects in motion continue that motion in a straight line unless acted upon.
Understand the relationship between normal force, gravity, net force, and acceleration in the context of a ride in an elevator.
Move a sled on ice as directed by telling an eskimo to push, pull, or apply no force at all.
Explains Newton's first law and demonstrates the law with an experiment.
Covers the concept that an object in motion will stay motion and an object at rest will stay at rest unless a net force acts on it.
A list of student-submitted discussion questions for Newton's First Law.
This study guide looks at Newton's three laws, free body diagrams, and types of forces, including the force of gravity, normal force, and friction force.