• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Collision of billiards

  • Thread starter aatari
  • Start date
60
2
Could someone please have a look at my solution and tell me if it makes sense. Although I am able to get the initial velocity that the question asked for, however the fact that I did not incorporate the y-component which is 1.2sin30 degrees into the solution makes me doubtful. If I do need to use that into the solution, how would that fit in? Please help!

1. Homework Statement


A 0.50 kg cue ball makes a glancing blow to a stationary 0.50 kg billiard ball. After the collision the cue ball deflects with a speed of 1.2 m/s at an angle of 30.0° from its original path. Calculate the original speed of the cue ball if the billiard ball ends up travelling at 1.6 m/s.

2. Homework Equations

Pi = Pf

3. The Attempt at a Solution
20171014_232649[43448].jpg


 

haruspex

Science Advisor
Homework Helper
Insights Author
Gold Member
2018 Award
31,712
4,687
Could someone please have a look at my solution and tell me if it makes sense. Although I am able to get the initial velocity that the question asked for, however the fact that I did not incorporate the y-component which is 1.2sin30 degrees into the solution makes me doubtful. If I do need to use that into the solution, how would that fit in? Please help!

1. Homework Statement


A 0.50 kg cue ball makes a glancing blow to a stationary 0.50 kg billiard ball. After the collision the cue ball deflects with a speed of 1.2 m/s at an angle of 30.0° from its original path. Calculate the original speed of the cue ball if the billiard ball ends up travelling at 1.6 m/s.

2. Homework Equations

Pi = Pf

3. The Attempt at a Solution
View attachment 213143
In what direction do you think the second ball will go?
 

Want to reply to this thread?

"Collision of billiards" You must log in or register to reply here.

Related Threads for: Collision of billiards

  • Posted
Replies
3
Views
2K
  • Posted
Replies
1
Views
1K
  • Posted
Replies
8
Views
15K
  • Posted
Replies
1
Views
2K
  • Posted
Replies
17
Views
2K
  • Posted
Replies
2
Views
4K
  • Posted
Replies
1
Views
2K
  • Posted
Replies
2
Views
7K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top