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10 Examples Of Newton’s Second Law Of Motion & It’s Applications

In Newton’s second law, known as the Fundamental Principle of Dynamics, the scientist establishes that the greater the mass of an object, the more force will be needed to accelerate it. That is, the acceleration of the object is directly proportional to the net force acting on it and inversely proportional to that of the object.

We know that an object can only accelerate if there are forces on this object. Newton’s second law tells us exactly how much an object will accelerate for a given net force.

10 Examples Of Newton's Second Law Of Motion & It's Applications

In other words, if the net force were doubled, the acceleration of the object would be twice as great. Similarly, if the object’s mass were doubled, its acceleration would be halved.

10 Examples Of Newton’s Second Law Of Motion In Real Life

This Newton’s law applies to real life, being one of the laws of physics that most impacts our daily lives.

1- Kick a ball

When we kick a ball, we exert force in a specific direction, which is the direction in which the ball will travel.

Also, the harder that ball is kicked, the stronger the force we put on it and the farther it will go.

2- Catch the ball with your hand

Professional athletes move their hand back once they catch the ball, as it gives the ball more time to lose its speed, and in turn applies less force on their part.

3- Push a car

For example, pushing a shopping cart with twice the force produces twice the acceleration.

4- Push two cars

On the other hand, pushing two supermarket carts with the same force produces half the acceleration, because this varies inversely.

5- Push the same cart full or empty

It is easier to push an empty shopping cart than a full one, since the full cart has more mass than the empty one, so more force is needed to push the full cart.

6- Push a car

To calculate the force necessary to push the car to the nearest gas station, assuming that we move a one-ton car around 0.05 meters per second, we can estimate the force exerted on the car, which, in this case, will be about 100 newtons.

7- Drive a truck or car

The mass of a truck is much greater than that of a car, which means it requires more force to accelerate by the same amount.

When, for example, you drive a car at 100 km on a highway for 65 km, you will undoubtedly use much less gasoline than if you had to drive at the same speed for the same distance in a truck.

8- Two people walking together

The same reasoning above can be applied to any moving object. For example, two people walk together, but one of them has a lower weight than the other, although they walk exerting the same amount of force, who It weighs less and will go faster because its acceleration is undoubtedly greater.

9- Two people pushing a table

Let’s imagine two people, one with greater force than the other, pushing a table, in different directions.

The person with the greatest force is pushing east, and the person with the least force is pushing north.

If we add both forces, we will obtain a resultant equal to the movement and acceleration of the table. The table, therefore, will move in a northeast direction, although with a greater inclination towards the east, given the force exerted by the stronger person.

10- Open a door

When we open a door we will have to apply different force depending on the material with which it is made. Although it may have the same proportions, a greater force will have to be exerted on an iron leaf door compared to a wooden door.

10 applications of newton’s second law of motion

This law has numerous practical applications in various aspects of our daily lives and in different fields.

Here are 10 applications of Newton’s second law:

  • Automotive Design
  • Sports Science
  • Aerospace Engineering
  • Elevator Systems
  • Construction and Building Safety
  • Traffic Engineering
  • Medical Imaging
  • Robotics
  • Physics Experiments
  • Physics Simulations

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