Sir in the last question of 2 particles with same mass and velocity v 2v resp is the answer - Physics - Work Energy and Power

Question

Sir in the last question of 2 particles with same mass and velocity
v&2v resp is the answer 7? i e after 7 collisions they collide
at A again Sorry if i am wrong but i did it just by visualising
using the fact that their velocities will interchange as you said

Sakshi Kanwar · Accepted Answer

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Sir in the last question of 2 particles with same mass and velocity v&2v resp. is the answer 7? i.e. after 7 collisions they collide at A again. Sorry if i am wrong but i did it just by visualising using the fact that their velocities will interchange as you said.