- #1

mck

- 8

- 0

**A particle of mass**

*m*moves in a center of mass frame of reference with a momentum*p=2m*. The center of mass moves with a speed*v*along the axis in the frame of reference of the laboratory. What's the angle of the particle in the frame of reference of the laboratory.What i think I have to do is to calculate the speed of the particle in the laboratory frame of reference, than it is just a simple trigonometric calculation. But I don't really know how to do this.