KE question!

  • #1
Alright, I was wondering if Change in Kinetic energy of a particle (after undergoing a constant force acting on it) would be oberserved to be the different value measured from two different inertial reference frames.

Here's one particular case...Say you're on earth and I on a space ship. We are both observing the same particle in the space and there's a force action on the particale. The partical displace it self through surface, therefore there's work done on the particle due to the force and therefore it will change it's kinetic energy. But, would that change in kinetic energy of the partical agree if you were to do the same calculation from the spaceship?
 

Answers and Replies

  • #2
Meir Achuz
Science Advisor
Homework Helper
Gold Member
3,529
110
Energy is one component of a four-vector.
So energy and change in energy will be different in different Lorentz systems.
 
  • #3
1,250
2
The answer is yes, the calculation would be different. Additionally, no one ever said that energy is conserved when changing reference frames.
 

Related Threads on KE question!

  • Last Post
Replies
12
Views
3K
  • Last Post
Replies
8
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
9
Views
3K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
2
Views
803
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
1
Views
914
  • Last Post
Replies
3
Views
457
Top