Question

Two objects that are moving an xy-plane on a frictionless floor collide. Assume that they form a closed, isolated system. The following table gives ssome of the momentum compounds (in kilogram meters per second) before and after the collision. What are the missing values (a,b):

A. 10,11
B. 1,11
C. 5,7
D. 6,4

Answer 1

By COM
Along the x-axis
`-4+(P_(x))_(B)=3+4rArr(P_(x))_(B)=11`
Along the y=axis
`5-2=(P_(y))_(A)+2 rArr (P_(y))_(A)=1`