Solve Inelastic Collision: 20g Bullet & 3.8kg Pendulum

In summary, an inelastic collision is a type of collision where the kinetic energy of the system is not conserved, meaning the total energy before and after the collision is not equal. To solve for an inelastic collision, the conservation of momentum and kinetic energy equations can be used. The known values for a 20g bullet and 3.8kg pendulum will vary depending on the specific problem. It is possible to solve for an inelastic collision without knowing the coefficient of restitution, but knowing this value can provide a more accurate solution. Some real-world examples of inelastic collisions include car crashes, dropped watermelons, and bowling balls hitting pins.
  • #1
mrtkawa
9
0
i need help for this problem
if anyone could solve this, it's wonderful

A 20g rifle bullet traveling 250m/s buries it self in a 3.8kg pendulum hanging on a 2.3m-long string. how far does the pendulum swing horizontally?

Physics 3rd edition Douglas C. Giancoli
 
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  • #2
Just using the law of conservation of momentum
 
  • #3
thanks i got it
 

1. What is an inelastic collision?

An inelastic collision is a type of collision in which the kinetic energy of the system is not conserved. This means that the total energy before and after the collision is not equal. In an inelastic collision, some of the kinetic energy is converted into other forms of energy, such as heat or sound.

2. How do you solve for an inelastic collision?

To solve for an inelastic collision, you will need to use the conservation of momentum and the conservation of kinetic energy equations. The conservation of momentum equation states that the total momentum before the collision is equal to the total momentum after the collision. The conservation of kinetic energy equation states that the total kinetic energy before the collision is equal to the total kinetic energy after the collision. You can use these equations to set up a system of equations to solve for the final velocities of the objects involved in the collision.

3. What are the known values for a 20g bullet and a 3.8kg pendulum?

The known values for a 20g bullet and a 3.8kg pendulum will depend on the specific problem you are trying to solve. Typically, the mass and initial velocity of the bullet and the mass and initial velocity/height of the pendulum will be given. Other known values may include the coefficient of restitution, which represents the elasticity of the objects involved, and the angle of the pendulum at rest.

4. Can you solve for an inelastic collision without knowing the coefficient of restitution?

Yes, it is possible to solve for an inelastic collision without knowing the coefficient of restitution. However, if the coefficient of restitution is known, it can be used to determine the amount of kinetic energy that is lost during the collision. This can provide a more accurate solution.

5. What are some real-world examples of inelastic collisions?

Some real-world examples of inelastic collisions include a car crash, a dropped watermelon hitting the ground, or a bowling ball hitting pins. In each of these examples, some of the kinetic energy of the system is converted into other forms of energy, such as sound or deformation of objects involved in the collision.

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