Find the best answers to your questions with the help of IDNLearn.com's expert contributors. Whether it's a simple query or a complex problem, our experts have the answers you need.

Since the line of impact is parallel to the x-axis, the collision does not affect the velocity of the disk in the y-direction, so the angular momentum of the y-component of the velocity can be ignored (it will automatically be the same before and after the collision).
What is the angular momentum about point B due to the x-velocity of A before the collision?