Topic about masses (modern physics)

[tarekkkkk]

Homework Statement

If a system is composed of n particles that are freely moving is M(system)=M(total masses of particles)(sum)

Homework Equations

The Attempt at a Solution

of course no , but these particles isn't photons or electrons my doctor didnt exacly told me what are they so how can i proove the answer is no PLEASE GIVE ME HINTS

 

[rock.freak667]

What is the rest of the question?

 

[tarekkkkk]

this is the question >>

 

[Dick]

If you think the answer is no, then you can pick whatever particle type you want and answer to show the statement is wrong. You just want a counterexample. Photons are a good choice.

 

[tarekkkkk]

thank you, you really helped me how to think about the problem...