Thursday, May 8, 2014

conservation of momentum

Suppose two spheres approach each other at 1 m/s from opposite directions. Their total momentum is zero. After the collision, they both zoom off at 1m/s in opposite directions. 
What is their momentum? 
What do you know about the mass of the two spheres? 

56 comments:

  1. Their momentum is zero and I know nothing about the mass!

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  2. Well, we can't figure it out because the mass is not given. To find momentum, you need mass and velocity.

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  3. Both spheres momentum is probably about 1m/s. Both spheres have the same mass because if they didn't then the sphere with the greater mass would push the object with less mass in it's own direction.

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    1. But we can't know sure what the momentum is because the example only gives speed not velocity.

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    2. The momentum stays at zero. Due to the law of conversion of momentum says that the total momentum when two object collide stays the same.

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  4. King of Everything except for the MINIONSThursday, May 08, 2014

    What Ben said

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  5. What the heck idk I don't understand this can you teach us please Mr. Ruby?

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  6. momentum is zero

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  7. the momentum is because the example only gives speed not velocity.

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  8. I don't know.

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  9. We cant figure it out without mass.

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  10. We can't figure it out.

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  11. I don't know.

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  12. As Ben had said you can't figure it out cause the mass is not given. You need mass and velocity to find momentum.

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    1. Sorry, their momentum is zero because the law of conservation of momentum says that the total momentum of objects that collide with each other the momentum does not change. So it would be zero as the blog had said. And the mass of the two spheres are the same.

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  13. King Of The MinionsThursday, May 08, 2014

    We need the mass to solve it.

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  14. Well, we can't figure it out because the mass is not given. To find momentum, you need mass and velocity.

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    Replies
    1. You copied ben please post your own.

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    2. Yeah Ben please post your own.

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  15. THERES NO MASS MR RUBY

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  16. You can't figure it out because the mass isn't given. You need mass and velocity to figure out momentum.

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  17. AW MEH GAWD SPHERE CILLISIN IT GUUTA BEH NER MASE
    (oh my god sphere collision it's gotta be no mass)

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  18. There is no mass so we can't find the momentum.

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  19. Since everyone else is saying this, we need the mass or something I'm not really sure.

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  20. There is no mass so we can's find the momentum.

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  21. Theres no mass in the equation.

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  22. No mass and no momentum

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  23. There is no mass

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    1. YOU COPIED SOMEONE AND PUT IT INTO YOUR OWN WORDS!!!!!!!!!!!!!

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  24. you can not tell the mass
    loganm

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  25. This comment has been removed by a blog administrator.

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  26. No mass and no momentum

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  27. This comment has been removed by the author.

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  28. No mass and no momentum

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  29. Mass is equal between the two spheres.

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  30. The mass is the same, and the momentum is 0.

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  31. The mass is the same and no momentum.

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  32. The mass would be the same with no momentum.

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  33. The mass is the same without momentum

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  34. The mass would be the same without any amount of momentum.

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  35. The spheres have the same mass, and the momentum is zero

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  36. Their mass is the same because they both hit each other and go the same distance and same speed

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  37. The mass is the same, and the momentum is 0.

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  38. is nothingness a kind of matter

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Please leave your first name with your comment. Thanks Mr. Ruby