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National Bird Day: Why Birds Matter to Us

National Bird Day is celebrated every year on 5 January . This day is observed to spread awareness about birds, their importance in nature, and the need to protect them. Birds are beautiful living beings and play a very important role in keeping our environment healthy. Origin of National Bird Day National Bird Day was first celebrated in the year 2002 . It was started by bird lovers and environmental groups to protect birds from dangers like deforestation, pollution, and illegal hunting. The main aim of this day is to teach people, especially students, why birds are important and how we can help save them. Why Is National Bird Day Celebrated Every Year? National Bird Day is celebrated every year because many bird species are disappearing due to human activities. Cutting trees, using plastic, pollution, and climate change are harming birds and their homes. This day reminds us that: Birds need protection Nature should be respected Everyone has a responsibil...
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Newton’s third law | Mechanics

Newton’s third law

  • According to this law, every action has an equal and opposite reaction. The action and reaction act on different body and they are always simultaneous.

Example:

  • When a bullet is fired from a gun, the gun recoils.

  • When we move on a road, we push the road from our feet in backward direction, and as a reaction the road pushes us to move in forward direction.
  • When a swimmer swims into water then he pushes the water by his hand and as a reaction the water pushes the swimmer in forward direction.

  • When the gas comes out from the back of the rocket as a jet, it provides the upthrust to the rocket as a reaction and hence the rocket move in upward direction.

  • The action and reaction never cancel each other.
  • This law contradicts theory of relatively, according to it the force signals can travel with infinite speed, whereas according to the theory of relativity nothing can travel with the speed larger than the speed of light.
To know more about Newton's third law of motion click on the link https://youtu.be/3WMhfI2JQZk
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