Correct Answer - Option 2 : Newton’s second law
CONCEPT:
Newton’s first law of motion: It is also called the law of inertia. Inertia is the ability of a body by virtue of which it opposes a change.
- According to Newton’s first law of motion, an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
Newton’s Second law of motion: The rate of change of momentum of any object is directly proportional to the applied force on the body.
\({\rm{Force\;}}\left( {\rm{F}} \right) = \frac{{{\rm{Δ }}P}}{{{\rm{Δ }}t}}\)
Where Δ P = Change in momentum and Δ t = change in time taken
Newton’s Third Law: To every action, there is always an equal (in magnitude) and opposite (in direction) reaction. This opposite force is called the reaction force.
- When a body exerts a force on any other body, the second body also exerts an equal and opposite force on the first.
-
Forces in nature always occur in pairs. A single isolated force is not possible.
EXPLANATION:
From the above explanation, we can see that,
- According to Newton's second law of motion," the rate of change of momentum of any object is directly proportional to applied force"
i.e., \({\rm{Force\;}}\left( {\rm{F}} \right) = \frac{{{\rm{Δ }}P}}{{{\rm{Δ }}t}}\)
Hence option 2 is correct among all
