A 4-kg disk slides over level ice towards the eact at a velocity of 1 meter per second, as shown. The disk strikes a post and rebounds towards the north at the Same speed. The change in the magnitude of the eastward component of the momentum of the disk is:

A 4-kg disk slides over level ice towards the eact at a velocity of 1

1.	A 4-kg disk slides over level ice towards the eact at a velocity of 1 meter per second, as shown. The disk strikes a post and rebounds towards the north at the Same speed. The change in the magnitude of the eastward component of the momentum of the disk is:
Answer» ANSWER :A