Answer to Question #92768 in Mechanics | Relativity for Sridhar

Question

Two particles P and Q each of mass 3m lie at rest oil the X-axis at points (−a.0) and (+a,0) respectively. A third particle R of mass 2m initially at the origin moves towards particle Q. If all the collisions of the system of 3 particles are elastic and head-on. the total number of collisions in the system is
And 2

Answer 1

The first collision: R and Q

the second collision: Q and P

In this way, the total number of collisions in the system is equal to 2

Answer

2