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Home Q & A Board Science-Related Homework Help Physics
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Biala Biala
wrote...
Posts: 67
Rep: 1 0
4 years ago
Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Ball A is moving upward along the y axis at vA = 2.4 m/s , and ball B is moving to the right along the x axis with speed vB = 5.2 m/s . After the collision, assumed elastic, ball B is moving along the positive y axis.
What is the final direction of ball A? What are their two speeds?
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wrote...
#1
Educator
4 years ago
Solution below, highlighted parts contain the three answers you're looking for
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Biala Author
wrote...
#2
4 years ago
Hey which one is the angle?
wrote...
#3
Educator
4 years ago
0 degrees, alpha = 0
Biala Author
wrote...
#4
4 years ago
I was just asking because I put that answer before and it told me that it wasn't right.
wrote...
#5
Educator
4 years ago
Quote from: Biala (4 years ago)
I was just asking because I put that answer before and it told me that it wasn't right.

So it's not accepting zero?
Biala Author
wrote...
#6
4 years ago
that is correct.
Post Merge: 4 years ago

I have to turn this in before 11:30 pm too so that sucks. Everything else worked
wrote...
#7
Educator
4 years ago
Quote from: Biala (4 years ago)
that is correct.
Post Merge: 4 years ago
I have to turn this in before 11:30 pm too so that sucks. Everything else worked

How about the other question you've got posted>
Biala Author
wrote...
#8
4 years ago
I was only able to do a couple parts of it. I couldn't figure out the rest.
wrote...
#9
Educator
4 years ago
Quote from: Biala (4 years ago)
I was only able to do a couple parts of it. I couldn't figure out the rest.

I haven't looked at it yet. And by the looks of it, won't be able to finish by 11:30 -- sorry Frowning Face

In terms of this question, the math check outs, the answer is 0 degrees. What else could it be?
wrote...
#10
Educator
4 years ago
On a side note, a similar example which I just upload also states that the angle is 0.

https://biology-forums.com/index.php?action=downloads;sa=view;down=12884
Biala Author
wrote...
#11
4 years ago
In that case I really don't know. I really do appreciate the help you have been so helpful.
wrote...
#12
Educator
4 years ago
Quote from: Biala (4 years ago)
In that case I really don't know. I really do appreciate the help you have been so helpful.

Maybe add the degree symbol? or rad? Don't know...

Should I attempt to answer the other, or there's no point anymore?
Biala Author
wrote...
#13
4 years ago
It already has it. No it's okay theres only 3 minutes left.
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