prove that the Newton 2nd law is real law
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Answer:
Expert Answer:
We shall derive the 1 st and the 3 rd law of motion fron the 2 nd law.
Derivation of 1 st law:
According to Newtons 2 nd law of motion,
F = ma
Where, F is the force applied, m is the mass of the body and a is the acceleration of the body.
So,
In absence of a force,
F = 0
=> ma = 0
=> a = 0
Since, m cannot be zero for a body.
Zero acceleration means, body at rest will remain at rest and a body in uniform motion will continue its uniform motion. Which is Newtons 1 st law of motion.
Derivation of 3 rd law:
Consider an isolated system of two bodies A and B. An isolated system is such that no force acts on the system.
This is the Newtons third law of motion for a body exerting some force on another.
Thus, Newtons 2 nd law of motion is the most basic law of motion.
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Answer:
This can be proved by showing that first law and third law are contained in second law of motion. That is if no force is acting on the body then its acceleration is zero, means if a body is at rest, it remains at rest and if the body is moving in straight line with constant velocity, it continues to do so.
Explanation:
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