Consider a gas enclosed in a box. A molecule of mass m, having a velo – McqOptions

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1.	Consider a gas enclosed in a box. A molecule of mass m, having a velocity -2i+3j+4k collides with a wall parallel to the xz plane. What will be its velocity after collision and its change in momentum? i,j & k are unit vectors along the x,y & z axis.
A.	-2i-3j+4k, -6mj
B.	2i+3j-4k, -6mj
C.	-2i-3j+4k, 6mj
D.	2i+3j-4k, 6mj
Answer» B. 2i+3j-4k, -6mj

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Consider a gas enclosed in a box. A molecule of mass m, having a velocity -2i+3j+4k collides with a wall parallel to the xz plane. What will be its velocity after collision and its change in momentum? i,j & k are unit vectors along the x,y & z axis.