It can be thought of as the resistance of an object to changing its state of motion. Inertia is the tendency of an object to remain either at rest or to remain moving until it is acted upon by some external force. Images from Bing ImagesĨ Why does it take a large force to move a massive object, such as a car vs a skateboard?Īnything with mass possesses something called inertia. Your mass, however, is the same everywhere. On the moon, you would have a lower weight because the moon’s gravity doesn’t exert as great a force on you as does the Earth’s gravity. Weight is the force that an object’s mass exerts downward due to gravity.

When two objects push or pull on each other directly, such as when you kick a soccer ball or lean on a wall, it is a contact force. There is no contact required between objects for these forces to be felt. Gravity and electromagnetism are examples of field forces. Word Definition Force Weight Inertia Momentumħ A force is a type of interaction when an object pushes or pulls on another object. Task 1 (4 pts): Complete the table of definitions below as we go. Image from Bing Imagesĥ Success Criteria 1: I can differentiate between mass, weight, force, inertia, and momentum. Success Criteria 2: I can determine the net force acting upon an object. Success Criteria 1: I can differentiate between mass, weight, force, inertia, and momentum. Learning Goal: You will be able to use Newton’s First Law of Motion to describe the behavior of moving objects. Ex: Both cars in a collision are damaged, not just one. 3rd Law: All interacting objects push on each other with a force equal in magnitude but opposite in direction. Ex: The harder you push on a shopping cart, the faster it will speed up. 2nd Law: F = ma (Force equals mass times acceleration. Ex: An asteroid flying through space will keep going until it hits a planet. What are Newton’s Laws of Motion: 1st Law: Objects at rest will stay at rest and objects in motion will stay in motion until acted upon by an external force. He also invented calculus!!!! This unit is about the three laws of motion he first described in 1686.ģ Ex: Both cars in a collision are damaged, not just one.

He was the first person to determine the laws of motion that govern almost everything in the universe. Newton’s 2nd Law of Motion Newton’s 3rd Law of Motion FrictionĢ Who was Isaac Newton? He was probably the most influential scientist who has ever lived. Presentation on theme: 'Physics Unit 3: Forces Newton’s 1st Law of Motion'- Presentation transcript:ġ Physics Unit 3: Forces Newton’s 1st Law of Motion

Newton's 1st law online game