Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest and an object in motion will remain in motion at a constant velocity unless acted upon by an external force.
Inertia is the tendency of an object to resist changes in its state of motion. It is directly proportional to an object's mass, meaning that the greater the mass of an object, the greater its inertia.
Newton's first law describes inertia as directly proportional to mass, meaning that the more mass an object has, the more force is required to change its state of motion. This is because objects with more mass have a greater resistance to changes in motion.
Yes, an example of this can be seen in a car crash. A heavier car will have a greater inertia, meaning it will require more force to change its state of motion, compared to a lighter car. This is why it is generally safer to be in a larger, heavier vehicle during a collision.
Yes, Newton's first law applies to all objects, regardless of their size or shape. It is a fundamental law of physics that helps us understand and predict the behavior of objects in motion.