Newton's first law is to define force
Second law to measure force
Third law to know about nature of force
What about fourth law? I have not heard about it.
May be your expectation with gravitation
Isaac Newton, he discovered: -Newton's First Law of motion. -Newton's Second Law of motion. -Newton's Third Law of motion.
His First Law and Second Law both do.
Actually, the first one is completely independent on the second one. But the second one doesn't make any sense without the first one.
This is because two concepts are derived from the newtons second law. First : Force . F = m * a Second : momentum .. p = m * v
The clue is in the question.
the law of inertia
F = m a
yea
Newton's first law is to define force Second law to measure force Third law to know about nature of force What about fourth law? I have not heard about it. May be your expectation with gravitation
Its a matter of being scientifically rigorous. You can not claim the 2nd law as a law unless you first establish the first law.
Mass
Law of Inertia.