Re: Inertia and third principle

In my animation https://www.geogebra.org/m/qterew9m the momentum of
body A before the collision is p=mv=15v.

After the collision, the momentum of body A is reduced to
p=m*(1/4)v=15*(1/4)v=(15/4)v=3.75v

During the collision, body A lost a momentum equal to 15v-3.75v=11.25v

Where did this momentum lost by body A during the collision go?

Luigi Fortunati

[[Mod. note --
Hint: What is body B's mass?  What was its velocity before the collision?
What is its velocity after the collision?
-- jt]]