- #1
cheez
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I read the answer of it, but I don't get why the answer is that.
And the answer is
1/2 M gun x (M bullet * V bullet / M gun)^2
- 1/2 M gun+you x (M bullet * V bullet/ M gun+you) ^2thx!
You forget to hold your gun against your shoulder and it recoils into you. How much Joules of kinetic energy end up in your shoulder? Assume you and the gun move together in the end.
masses: You=90 kg, gun=10kg, bullet= 0.0085kg
velocity of the bullet = 87m/s
Päällikkö said:What have you tried?
After the impact, energy is conserved (you can't assume conservation during the impact though).
The conservation of momentum and energy is a fundamental law in physics that states that the total momentum and energy of a closed system remains constant over time. This means that in any interaction or process, the total amount of momentum and energy at the beginning will be equal to the total amount at the end, even if there are changes in the individual components.
The conservation of momentum and energy is important because it helps us understand and predict the behavior of physical systems. It is a fundamental principle that is used in various fields such as mechanics, thermodynamics, and electromagnetism. It also allows us to analyze and solve problems involving collisions, explosions, and other types of interactions.
The conservation of momentum and energy are closely related because they are both properties of a closed system. In any physical process, both momentum and energy must be conserved at the same time. This is because energy can be transferred from one form to another, but it cannot be created or destroyed. Similarly, momentum can be transferred between objects, but the total amount within the system remains constant.
No, the conservation of momentum and energy is a fundamental law of physics that has been observed and tested in countless experiments. In any closed system, these principles hold true. However, in certain cases where the system is not completely closed, such as in nuclear reactions or when considering relativistic effects, the conservation laws may need to be modified.
The conservation of momentum and energy has numerous applications in real-world situations. It is used in the design of vehicles, such as cars and airplanes, to ensure they have enough momentum and energy to operate efficiently. It is also crucial in understanding and predicting the behavior of natural phenomena, such as the movement of planets and the behavior of fluids. Additionally, the conservation laws are applied in industries such as renewable energy, where the efficient use and conversion of energy is essential.