Mass And Newton's First Law
Three examples in my life that have the same relationship between inertia and Newton's first law is that one of them involves a soccer ball and a tennis ball. The soccer ball has more mass than the tennis ball so the soccer ball will have more inertia and with Newton's first law the object will stay in motion. The more mass an object has the more force you will need to apply to in order to make it move. Another example is a beach ball(5 kg) and a golf ball(10 kg). Even though the beach ball is bigger the amount of mass of the golf ball will have more inertia. Inertia only depends on the amount of mass an object has NOT the size. This will make the golf ball take a little bit more force to make that object move, and on the other hand the beach ball is lighter than the golf ball. Newton's first law states that an object in motion stays in motion while an object at rest stays at rest... This is similar to Inertia because they both require an object to either to remain at rest or remain moving with a constant speed. A last example I have is 2 rocks with one of them being 5 kg and the other rock with 15 kg. They both have the same size, but the rock with 15 kg will obviously have more inertia because that one has more weight. This relates to Newton's First law because the both require the object to saying at rest or the object moving.
Instead of saying that it would have more inertia because it has more weight, you would say that it has more inertia because it has more MASS. The reason, is that if you were in outer space with no gravity (weightless - not weight!), it would still have more inertia!
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