Question

newton's first law of motion describes ?
a,energy
b,work
c,inertia
d,momentum.
which is the correct option.​

Answer 1

Answer:

c,inertia

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Answer 2

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Option c ) Inertia

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Newton's first law of motion says that a body continues to be in the state of rest or uniform motion unless a net external force acts on it.

This law of motion describes the description of inertia.

Inertia is the Incapability of a body to change it's form of rest or uniform motion on itself. It does this only by help of a net external force.

Based on this law it can be said that if a body is moving with constant velocity or is at rest then then the net external force acting on it is Zero.

It can also be said that if a body is at rest or moving with constant velocity then the resultant of all forces acting on it is Zero.

$\blue{\mid{\underline{\overline{\textbf{types \: of \: inertia : -}}}\mid}}$

$\bigstar \: Inertia \: of \: rest :-$

It's is the resistance of a body to keep it's state of rest .

Ex - From pile of books when a book from mid is suddenly taked out then all other upper books do not fall because of their Inertia of rest.

$\bigstar \: Inertia \: of \: motion :-$

It is the resistance of a body to keep ita state of motion.

Ex - When a running boy faces a stone in its path then he tends to fall forwards because the stone breaks inertia of its feet and inertia of its upper part of body keep to continue, thus he didn't stops moving and falls.

$\bigstar \: Inertia \: of \: direction : -$

It is the resistance of a body to keep its state of direction.

Ex - When a car takes a turn then the person in car is pushed to opposite direction of turn because we have our inertia of direction. So we cannot change direction on own, in that case.

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