Question

If something is _________________, it stays still unless an outside force acts upon it

Answer 1

★ Provided Question ★

If something is _________________, it stays still unless an outside force acts upon it.

★ Required Answer ★

If something is at rest , it stays still unless an outside force acts upon it.

${\boxed {\huge {\bf {\pink { Answer \leadsto \purple{At \: rest} }}}}}$

How?

According to the first law of motion an object at rest will remain at rest unless acted upon by an outside force.

Therefore this is the only suitable word here can be used. Thus , If something is at rest , it stays still unless an outside force acts upon it.

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★ Additional Information ★

What is motion?

• When a body changes its position with respect to time and its reference point, then it is called that it is in motion.

Equations of motion:

• ${\boxed {\huge {\bf {\pink { v=u+at}}}}}$
• ${\boxed {\huge {\bf {\pink { s =ut + \dfrac{1}{2}a{t}^{2}}}}}}$
• ${\boxed {\huge {\bf {\pink { 2as ={v}^{2}-{u}^{2}}}}}}$

Where,

v denotes final velocity.

u denotes initial velocity.

'a' denotes acceleration.

's' denotes distance/displacement.

t denotes time.

Laws of motion:

First law of motion:

✤ An object in motion will remain in motion unless acted upon by an outside force. An object at rest will remain at rest unless acted upon by an outside force.

Second law of motion:

✤ The acceleration of the body is directly proportional to the force acting on it and is inversely proportional to its mass and takes place in the same direction of the force.

Third law of motion:

✤For every action there is an equal opposite reaction.

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Answer 2

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If something is _________________, it stays still unless an outside force acts upon it.

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If something is at $\sf\underline\red{rest}$ , it stays still unless an outside force acts upon it.

${\huge{\underline{\small{\mathbb{\pink{HOPE\:HELPS\:UH :)}}}}}}$

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