Finding the recoil velocity

  • Thread starter duke414
  • Start date
  • #1
3
0
The nucleus of ^214 {Po} decays radioactively by emitting an alpha particle (mass 6.65 * 10^-27 kg) with kinetic energy 1.23 * 10^{-12} J, as measured in the laboratory reference frame.

Assuming that the {Po} was initially at rest in this frame, find the magnitude of the recoil velocity of the nucleus that remains after the decay.



I'm not even sure where to begin. Any guidance in the right direction would be appreciated.
 

Answers and Replies

  • #2
ehild
Homework Helper
15,543
1,911
Think that the Po nucleus is a gun and the alpha particle is a bullet. The gun recoils when the bullet is fired. You can determine the recoil velocity, by applying a conservation law, what is it?

ehild
 
  • #3
3
0
so i can use the kinetic energy to find velocity then use p = mv to calculate the recoil? can't believe i didnt think of it that way. thanks.
 
  • #4
ehild
Homework Helper
15,543
1,911
Always remember conservation of momentum when you hear "recoil" :smile:

ehild
 

Related Threads on Finding the recoil velocity

  • Last Post
Replies
15
Views
38K
  • Last Post
Replies
14
Views
59K
Replies
1
Views
5K
  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
2
Views
4K
Replies
3
Views
4K
Replies
4
Views
889
Replies
1
Views
10K
Replies
13
Views
24K
Top