Question

In kinetic theory of gases, a molecule of mass m of an ideal gas collides with a wall of vessel with velocity V. The change in the linear momentum of the molecule is

• A. 2mV
• B. Mv
• C. – mV
• D. Zero

Answer 1

Answer: (A)

2mV

Answer 2

$\Delta p = mV - ( - mV) = 2mV$