describe Newtowns
first law
Answers
Answer:
The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. Newton's first law of motion is often stated as. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Answer:
It is a kind of nonsense really, but it is conceptually a very helpful introduction to the subject of mechanics and so still widely quoted.
No body does not have unbalanced forces in its gravitational reference frame. Also the concept of being at rest as Galileo showed is highly subjective and of course Newton knew that anyway. Einstein took this a little further and one of the things he made clearer is that from a purely observational perspective there is no preferred reference frame.
However, if that is the level at which you are then I would just take it as quoted for now. So in modern language:
"An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force."