What is the correct collision formula in this scenario?

In summary, the conversation discusses a problem with collisions in a space game. The given information includes the direction and speed of objects A and B, their mass, and material. The collision is two-dimensional and not always head on. The formula needed to simulate the collision is also requested. Additionally, the question of whether the collision should cause the objects to spin is raised. Two possibly useful resources are shared. The individual expresses gratitude for the help and plans to update if any further problems arise.
  • #1
StarWarsNerd
19
1
I am working on a simple space game, and I am having trouble figuring out how to do collisions correctly; things bounce in the wrong direction or just get stuck together. Here are the things that are given:
  • Direction of objects A + B in degrees
  • Speed of objects A + B in meters per second
  • Mass of objects A + B in kilograms
  • The material of A + B (any properties of that material)
The collision is in two dimensions, and it is not always going to be head on. What is the formula that I need to simulate the objects colliding?

On a related note: how would I calculate if the objects should spin due to the collision?
 
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  • #3
robphy said:
Possibly useful:
http://www.myphysicslab.com/collision.html
Thanks! I had been looking for something like that for days. I'll post back here if I have any other problems.

UPDATE:
329679.image1.png

if I use this and break the final velocities into their x and y components, would I get the desired result?
 
Last edited:

FAQ: What is the correct collision formula in this scenario?

What is the correct collision formula in this scenario?

The correct collision formula in a scenario depends on several factors such as the objects involved, their masses, velocities, and the type of collision (elastic or inelastic). The most commonly used formula for calculating collisions is the conservation of momentum and energy equations.

How do you determine if a collision is elastic or inelastic?

An elastic collision is one in which the total kinetic energy of the system is conserved. In an inelastic collision, some of the kinetic energy is lost and converted into other forms of energy. The type of collision can be determined by comparing the kinetic energy of the system before and after the collision.

Can the collision formula be used for all types of collisions?

No, the collision formula cannot be used for all types of collisions. For example, in cases where the objects involved stick together after the collision, the conservation of momentum and energy equations cannot be applied. In such cases, other formulas such as the coefficient of restitution must be used.

Are there any limitations to using the collision formula?

Yes, there are certain limitations to using the collision formula. It is based on the assumption that the objects involved are rigid bodies and that there are no external forces acting on them during the collision. Additionally, the formula may not be accurate in cases where the objects have irregular shapes or are deformed during the collision.

How do variables such as friction and air resistance affect collision calculations?

Variables such as friction and air resistance can significantly affect the outcome of collision calculations. These forces can cause a loss of kinetic energy and change the direction and velocity of the objects involved, making it more challenging to accurately predict the outcome of a collision. In some cases, these forces may need to be taken into account when using the collision formula.

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