In which of the following scenarios can momentum not be conserved? (Assume a one
ID: 1609907 • Letter: I
Question
In which of the following scenarios can momentum not be conserved? (Assume a onedimensional collision and no total energy gain.) Mass of Cart B > mass of Cart A. Explain.
(a) Cart A traveling in the positive direction hits Cart B, initially at rest. After the collision Cart A moves in the negative direction and Cart B moves in the positive direction.
(b) Cart A traveling in the positive direction hits Cart B, initially at rest. After the collision, both carts move in the positive direction.
(c) Cart B traveling in the positive direction hits Cart A, initially at rest. After the collision Cart B moves in the negative direction and Cart A moves in the positive direction.
(d) Cart B traveling in the positive direction hits Cart A, initially at rest. After the collision, both carts move in the negative direction.
(e) None of the above
Explanation / Answer
in option D momentum can't be conserved
(d) Cart B traveling in the positive direction hits Cart A, initially at rest. After the collision, both carts move in the negative direction.
as we know
m1u1 + m2u2 = m1v1 + m1v2
m1u1 = m1v1 + m2v2
for this condition it is not possible