Bullet
Preeti Gurung
Date- 12/19/2018
Blog
We see newton's law applied everywhere. However, the newton's law reaction is harmful or useful.According to the third Newton's law: every action has an equal and opposite reaction. Then, both action should get cancelled and the body should remain constant. My question is, why does a bullet move from a gun according to this law?
Rifle and bullet together form since when they are in contact. So, they have newton's third law applied to them .
Since, the bullet is inside the gun, they came contact with each other before the bullet was fired, that means (they are part of the systems) As soon as a bullet is fired the chemical reaction would take place that rapidly cause the gunpowder which expands pushing it from its shell - once again bullet and shell form a system. Shell heats up, and bullet gains energy and the bullet which expands out of the gun.We can recast Newton's third law from forces to change in momentum. Momentum is defined as mass times velocity.
Before the gun is fired, everything is at rest. The bullet experiences a change in momentum that must be matched by a change in momentum of the gun. This is Newton's third law in action. The change in momentum of the gun is called recoil because the gun is much more large compared to the bullet, it does not recoil as noticeably. “You can see this whenever someone shoots a gun; they need to ground themselves to hedge against the recoil.” The average force exerted on the bullet is 304 Newtons.
The next step will be more interesting and might be lit if change in the bullet. May be the acceleration will be greater or smaller of the bullet
http://scienceline.ucsb.edu/getkey.php?key=5890
https://thecuriousastronomer.wordpress.com/2014/12/22/newtons-3rd-law-of-motion/
Date- 12/19/2018
Blog
We see newton's law applied everywhere. However, the newton's law reaction is harmful or useful.According to the third Newton's law: every action has an equal and opposite reaction. Then, both action should get cancelled and the body should remain constant. My question is, why does a bullet move from a gun according to this law?
Rifle and bullet together form since when they are in contact. So, they have newton's third law applied to them .
Since, the bullet is inside the gun, they came contact with each other before the bullet was fired, that means (they are part of the systems) As soon as a bullet is fired the chemical reaction would take place that rapidly cause the gunpowder which expands pushing it from its shell - once again bullet and shell form a system. Shell heats up, and bullet gains energy and the bullet which expands out of the gun.We can recast Newton's third law from forces to change in momentum. Momentum is defined as mass times velocity.
Before the gun is fired, everything is at rest. The bullet experiences a change in momentum that must be matched by a change in momentum of the gun. This is Newton's third law in action. The change in momentum of the gun is called recoil because the gun is much more large compared to the bullet, it does not recoil as noticeably. “You can see this whenever someone shoots a gun; they need to ground themselves to hedge against the recoil.” The average force exerted on the bullet is 304 Newtons.
The next step will be more interesting and might be lit if change in the bullet. May be the acceleration will be greater or smaller of the bullet
http://scienceline.ucsb.edu/getkey.php?key=5890
https://thecuriousastronomer.wordpress.com/2014/12/22/newtons-3rd-law-of-motion/
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