Question: If the RMS speed of a gas is 300 m/s, what is the kinetic energy per molecule?

Options:

1. 0.5 * m * (300)^2
2. 0.5 * m * (150)^2
3. 0.5 * m * (600)^2
4. 0.5 * m * (100)^2

Correct Answer: 0.5 * m * (300)^2

Solution:

The kinetic energy per molecule is given by KE = 0.5 * m * v^2. Substituting v = 300 m/s gives the correct expression.