Question

prove that newton's first law is contained in newton's second law of motoin

Answer 1

2nd law of motion states that
F(ext)= ma
If no force is applied then,
F(ext)=0
hence, ma = 0
As mass can never be zero
so a= 0
this means that the body is in the state of rest or in uniform motion
this is nothing but newtons 1st law of motion
which states that a body will be in state of
rest or of uniform motion unless an external
force is applied
Therefore we can say that Newtons 1st law of
motion is contained in its 3rd law of motion.

Answer 2

Hiii

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First law is contained in second law: According to Newton’s second law of motion,

F = m.a

It means that there will be no acceleration in the body if no external force is applied. This represents that a body at rest will remain at rest and a body in uniform motion will continue to move along the same straight line in the absence of an external force. This corresponds to Newton’s first law of motion. So, first law of motion is contained in Second law of motion

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Hope it will help u.....................