- #1

peace

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- Homework Statement
- In the event of a collision between two cars, pieces attached to them may be thrown into adjacent areas. How can the initial velocity of two cars be Estimated from such an observation? (Try a numerical example.)

- Relevant Equations
- I'm not sure about that.

What came to my mind for this question is:

Consider one of the cars. The velocity and mass of this car are V and M respectively.

And the velocity and mass of the piece attached to the car are m, v respectively.

Before the collision, the velocity of this piece relative to this car is zero. So its momentum is zero.

Before the collision, but the car has a non-zero velocity. So it has a non-zero momentum.

The second case is after the collision.

After the collision, the car's momentum is zero. But if the impact is too great, one of the pieces of the car may be thrown around.

I thought that the velocity of this piece thrown after the collision could be determined by its range.

I thought that when the velocity of this piece was determined, I would use the law of momentum conservation for this car and the piece attached to it.

The calculation is as stated above in the image below.

But I doubt its correctness. Please guide me in this question.

thanks

Consider one of the cars. The velocity and mass of this car are V and M respectively.

And the velocity and mass of the piece attached to the car are m, v respectively.

Before the collision, the velocity of this piece relative to this car is zero. So its momentum is zero.

Before the collision, but the car has a non-zero velocity. So it has a non-zero momentum.

The second case is after the collision.

After the collision, the car's momentum is zero. But if the impact is too great, one of the pieces of the car may be thrown around.

I thought that the velocity of this piece thrown after the collision could be determined by its range.

I thought that when the velocity of this piece was determined, I would use the law of momentum conservation for this car and the piece attached to it.

The calculation is as stated above in the image below.

But I doubt its correctness. Please guide me in this question.

thanks