Task 3 : Newton's 1st, 2nd and 3rd law of motion.

-

 Explain Newton's 1st law, 2nd Law and 3rd Law of motion, with 1 example for each. 


NEWTON'S 1ST LAW OF MOTION. 

Newton's first law of motion was discovered by Sir Isaac Newton. It states about the inertial nature of an object. Newton's first law of motion states that an object will remain in its original state or in a state of uniform velocity if no external force acts on the object. 

An object that is stationary will remain stationary. For example, a stone in the ground is in a state of rest.  

The rock will remain stationary on the ground when no force is applied.

Therefore, to move the stationary object, an external force is required. 


The stationary stone moves when a force (throwing a stone) is applied to it.

When an object moving with uniform velocity it will keep moving with uniform velocity along a straight line. To change that condition, an external force must be acted on the object. 


NEWTON'S 2ND LAW OF MOTION

Newton's second law of motion states that the rate of change of momentum is directly proportional to the resultant force acting on the object in the same direction as the direction of action. 

Newton's second law of motion is better known by the formula F = ma 
Where: F is Force
             m is mass of an object and 
             a is acceleration. 

This means that all objects of constant mass under the influence of a non -zero resultant force F will experience acceleration. Thus, Newton's second law of motion is also known as the law of acceleration.

For example : 



When we ride a bicycle, we push on the pedals, our bicycle accelerates. We are increasing the speed of the bicycle by applying force to the pedals.


NEWTON'S 3RD LAW OF MOTION

Newton’s third law of motion states that for every force of action, there is one reaction force that has the same magnitude and acts in the opposite direction. The third law of motion is also known as the law of action and reaction. 

For example :


When we jump, our legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels us into the air.


SUMMARY 

Newton's first law of motion = know as law of inertia. 
  • moving objects will keep moving.
  • object at rest stay rest 
unless acted upon by an unbalancing force : Balanced and Unbalanced
Newton's second law of motion use F = ma. 
  • more force = more acceleration
  • more mass = less acceleration

Newton's third law of motion known as action and reaction. 
  • forces act in pairs. 





Comments

Post a Comment

Popular posts from this blog

Assignment 3: Mini Lean/5S Project​

-
Image
  ​In e-portfolio, demonstrate a mini lean/ 5S project. It should shows the difference in efficiency/ waste reduction before and after (5%).   Before  The picture above shows the condition of my messy desk. Due to a busy week with quizzes, assignments and exams, I didn't have time to tidy up the desk. A disorganized desk leads to misplaced documents, lost information, and increased stress. It also impacts how people view you, which can lead to heightened levels of self-consciousness (which can detract from focus on work-related tasks). Messy desk also can affect my anxiety levels, and ability to focus.  After By applying 5S, I have tidied up and have arranged the position of stationery and study equipment neatly. I have separated the necessary from the unnecessary, that is, just put the items that are only needed when studying on the desk (SORT). Next I designate a place for all necessary items (SET). I have also made sure the study desk is clean and tidy (SHINE). I also make sure
Read more

Task 2 : Science concept that used in engineering.

-
Image
Explain an example of 1 science concept that used in engineering.  Based on article that provided by Dr. Fadhilah, i can see the differences between scientist and engineer. Science aims to know while engineering aims to do. Science concept that used in engineering is science is a nature behaves in predictable ways. Searching for explanations is the major activity of science because effects cannot occur without causes. In that article  it says that engineers do what they do because they want to solve some real-world problem.   One of the concepts that is used in engineering is Newton's first law of motion which is closely related to inertia which is the tendency of an object to remain stationary or move. For example, when a bus stops suddenly, passengers will move forward. This is because passengers have inertia that makes them move backwards or forwards. The same situation where, if a car driver who is not wearing a seat belt and hit something in front, the driver will be thrown ou
Read more

Assignment 3 : Physics concept

-
Image
Assalamualaikum everyone. This is my  video assignment related to physics concept. I choose energy. Energy is defined as the “ability to do work, which is the ability to exert a force causing displacement of an object.” Despite this confusing definition, its meaning is very simple: energy is just the force that causes things to move. In this video i explained about 2 types of energy which are potential energy and kinetic energy. 
Read more