Thursday

October 23, 2014

October 23, 2014

Posted by **Deforest** on Tuesday, June 7, 2011 at 12:46pm.

- special relativity -
**Count Iblis**, Tuesday, June 7, 2011 at 1:13pmThe total energy of a system is given by:

E = gamma m c^2

The total momentum is:

p = gamma m v

The ratio p/E is thus:

p/E = v/c^2

So, if we know the energy and momentum of a system, we know the velocity.

For the given system, the energy is:

E = E1 + m2 c^2

The momentum is

p = p1

Therefore:

v = c^2 p/E = c^2 p1/(E1 + m2 c^2)

**Answer this Question**

**Related Questions**

special relativity - A photon of energy E collides with a stationary particle ...

modern physics - relativity - A photon of energy E collides with a stationary ...

Physics - Two masses, m1 = 2.0 kg and m2 = 3.3 kg, are moving in the xy-plane. ...

physics, please reply. - block 1 of mass 1 slides from rest along a frictionless...

physics - write down in terms of the mass m and the velocity v of the body, ...

Physics: Collison/Momentum Problem - A 15 kg mass, moving east at 5 m/s, ...

Science - Two masses of 20 and 10 kg are moving in the same direction and one ...

physics - work & energy homework problems: please help me =] my teacher is bad a...

phys3 - A projectile of mass 2.0 kg approaches a stationary target body at 4.9 m...

Physics - A child throws a snowball at a tree and it sticks to the tree. Does ...