Collisions on Momentum: The Law of Conservation of Momentum

Directory Page: Introduction: 3 Page Design: 4-6 Data Collected on Page: Description on Page 7-8: Conclusion: Page 10 Plagiarism Checking and Declaration: Page 11 References: Page 12 Appendix: Page 13 Page Introduction: The task of the 12th grade physics science student at Penryn College is to conduct experiments to investigate the impact of collision on momentum. Different pieces (500 g; 1 kg and 5 kg) were dropped onto the moving cart and the learner observed the speed of the cart before dropping the mass on the cart and observed the speed after the mass dropped.

Collisions between objects are governed by the law of momentum and energy. If a collision occurs in the separation system, the total momentum of the object system is preserved. If no net external force acts on the object, the momentum of all objects before collision is equal to the momentum of all objects after collision. If only two objects are involved in a collision, the momentum of each object equally changes in the opposite direction.

The harder it is to stop it, the more damage it will give you with a collision. The law of conservation of momentum is as follows. In the case of a collision between two objects in an isolated system, the total momentum before the collision is equal to the momentum of the two objects after collision ("elastic and inelastic collision"). Momentum is always preserved. However, the momentum equation depends on the type of collision. A table of equations entitled "Moment of inertia of some rigid bodies". Like the linear momentum conservation law, there is a law of conservation of angular momentum. This method can be applied to a rotating system without external torque or torque. This law explains why the rotating object starts to rotate faster (the angular velocity increases) or the reason why the rotating object rotates as the whole or a part of the mass of the rotating object rotates inside its rotation axis It helps to do.

Preservation of angular momentum of the rotating body is similar to preservation of linear momentum. Angular momentum is a vector indicating the law that as long as a twisting force called torque is not applied, its maintainability keeps rotating objects or systems rotating at the same speed. The angular momentum of each material consists of mass, the distance of the rotation axis, and velocity components perpendicular to the axis.

Therefore, the momentum conservation law is not enough to determine the motion of the particle after collision. You must know other attributes of the movement, kinetic energy. This is not always conservative. If it is preserved, the collision is called elastic collision, otherwise it is inelastic collision. Elastic collision is a collision where kinetic energy is not absorbed during a collision. If the objects are not in contact with each other, for example atomic repulsion or nuclear scattering, a completely elastic "collision" can occur, where electrical repulsion separates them. The satellite pachinko operation around the planet can also be thought of as a completely elastic collision. The collision between the two pool balls is a good example of almost complete elastic collision due to their high rigidity, but there will always be some dissipation as the body touches.