You are Here: Home >< Physics

# edexcel physics unit 4 particle physics watch

1. hello could anyone tell me why the total mass of the three particles after this event is greater than the mass of the two particles before?

K− + P = K0+ K+ + omega minus
(negative kaon+proton= neutral kaon+positive kaon+omega minus)

the markscheme says the kinetic energy of the negative kaon is responsible. :s
2. (Original post by Munzereen.Shahid)
hello could anyone tell me why the total mass of the three particles after this event is greater than the mass of the two particles before?

K− + P = K0+ K+ + omega minus
(negative kaon+proton= neutral kaon+positive kaon+omega minus)

the markscheme says the kinetic energy of the negative kaon is responsible. :s
Mass is not always conserved, but mass-energy is. In order for the K- and P to combine they must be travelling at high speed, hence have a large kinetic energy. Some of this kinetic energy is converted into mass, leaving you with a greater total mass of reactants which also have less kinetic energy.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 10, 2016
Today on TSR

### Edexcel C2 Core Unofficial Markscheme!

Find out how you've done here

### Everything you need to know for GCSE maths

Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE