Why Are Newton’s Laws Of Motion Important To Us

Newton’s Laws
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Have you ever wondered why you stroke downward when you swim across the water to stay afloat and move forward or what makes your tyre stick with the ground while driving the vehicle? Stay here to know the daily life application of newton’s laws of motion. 

In 1686, English physicist and mathematician sir Issac Newton gave the three historical laws of motion, which helped us to identify how an object reacts while staying at rest, moving, and force acting upon it. 

Before getting ahead with the importance of newton’s laws of motion to our daily life, we will go through what actually all three motion states. 


Newton’s Laws of Motion

1. Newton’s first law of motion

The first law of motion is also known as the “law of inertia.” According to this, any change in the object’s motion is zero until any force applies to it.  

Any object that is uniform or at rest cannot start moving until or unless any external force applies. Similarly, any object cannot stop until any external force applies to it.

The property at which an object resists its own motion is called “inertia.” To learn more about inertia and motion, also read the Physics Formula

2. Newton’s second law of motion

Newton’s second law states that the force acting on an object is equal to the product of its mass and acceleration of the object. 

                                      F = ma


 F = external force act on the body

m = mass of an object

a = acceleration of an object

It also states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the object’s mass. 

                             a ∝ F                    

                             a ∝ 1m    

                            a = Fm

3. Newton’s third law of motion

According to the third law of motion, “every action has an equal and opposite reaction.”

Let us understand by an example. When you walk on the surface, you apply an acting force on the earth’s surface; similarly, the earth exerts an equal force with the same magnitude, which results in you moving in the forward direction. If you find it difficult to understand newton’s law of motion, then you can refer to NCERT Solution for class 11. 

Daily life Importance & Applications of Newton’s Laws of Motion

1. In Car’s Air Bags

 Airbags are fitted in the car to prevent the driver from severe injury. Whenever a vehicle meets with an accident, it suddenly lowers the speed of the moving car, which allows the electrical switch to be on. After the operation of the electrical switch, a chemical reaction occurs, which releases the gas that fills the airbags and prevents the driver from serious injury. 

Preparing for JEE examination then must check out the latest Integer base question for JEE Physics chapter- Newton’s laws of motion.

2. Objects Throw From Certain Heights

When an object is thrown from a certain height, it starts accelerating towards the ground due to gravitational pull. The more mass, the more acceleration will be. According to newton’s second law of motion, the acceleration of the body is directly proportional to the force. That’s why when a brittle object falls from a tall building suffers more deformity in comparison to the objects falling from a short height building.

3. Switching Off the Fan

When you switch off the electric fan. It stops after continuing moving for minutes. Why? Because whenever we turn off the fan, it stops rotating due to friction. 

4. Football Kick

Whenever a player kicks the football, it travels the farthest distance because force is directly proportional to acceleration. The more force draws more acceleration. 

Frequently Asked Questions(FAQs)

Q1. What are Newton’s laws of motion?

Ans- There are three laws of motion.

  1. Newton’s first law of motion: According to this law, an object remains at rest until any external force is applied to it. 
  1. Newton’s second law of motion: According to the second law, the force acting on an object is equal to the product of its mass and acceleration of the object. 

Read more about NCERT Solutions for class 12 Physics.

  1. Newton’s third law of motion: According to the third law of motion, every action has the equal and opposite reactions.

Q2. What is the importance of the first law of motion? 

Ans- The first law of motion helps us understand an object’s behavior whenever any external force is applied to it.

Q3. Why are newton’s laws important?

Ans- Newton’s laws are essential in the field of classical mechanics. The physics branch deals with the objects’ motion and displacement when a force acts upon them.