Glancing collision basic question?

Question

does the angle of the two items after the collisions always equal 90??
see pic: http://img179.imageshack.us/img179/277/p...

what does this mean?:

"after the collision the two particles have velocities that are directed at equal angles of 46 degrees on either side of the original line of motion of the particle going vertically(x-direction) "

Answer 1

I can't see yr pic since image shack just shows a registration screen.
No there's no rule that says post-collision paths must be 90 deg apart, nor that they must have paths that deviate at equal angles from the original path. However, from conservation of momentum, the post-collision paths must deviate oppositely (one clockwise, the other counterclockwise) from the original path. What the quoted phrase seems to mean is that one particle goes 46 deg measured clockwise, and the other particle 46 deg measured counterclockwise, from the original path.

Answer 2

The consistently equals ninety is interior the fields of atomic weight, and microscopic weight. whilst photographing, or weighing a fabric with extremely radio, wave scales you will in many situations see this analogous degree. this is with the aid of the grain element of visibility used to % out the ingredient. yet another significant element is it shows the two debris equivalent in some measurements are actually not the comparable precisely. This theoretical subject additionally shows that the adjustments would be intense in actually application of their weighted forte. Say you have been firing atomic gas gasoline with the aid of an area satellite tv for pc to maintain a relentless temperature. would you need to use organic gas, or the two measured quantities in precise pass particle. usually the respond is sure using fact there are in simple terms approximately 5 situations of gas firing that makes use of this precise of a measurement. The ninety is named inference chemical bond, showing the close degree of exhaust, overdraft, overload, and occasional burn popping out back at a controllable quantity.