Mass
x+y=Z
The link at the bottom will help you out, its a video
It states newtons law of gravitation
The push or pull exerted on one object by another is simply a force and this is measured in Newtons. Using Newtons second law: Force = mass * acceleration, we can see that one Newton is the force required to move a one kilogram mass at a rate of one meter per second squared.
F=ma Input: newtons second law at wolframalpha.com
Its a matter of being scientifically rigorous. You can not claim the 2nd law as a law unless you first establish the first law.
its not importsnt
This is because two concepts are derived from the newtons second law. First : Force . F = m * a Second : momentum .. p = m * v
the second law
The clue is in the question.
Actually, the first one is completely independent on the second one. But the second one doesn't make any sense without the first one.
Every single object that exists obeys ALL of Newtons Laws
yea
F = m a
Newtons Second Law was F=ma, means the force(F) acting on object is equal to mass(m) of object times it's acceleration(a).
Mass