# Physic

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31m/s is a typical highway speed for a car.
At what temperature do the molecules of nitrogen gas have an rms speed of 31 m/s?

• Physics -

The subject is Physics, ending with an s.

The average kinetic energy of any molecule of a gas is (3/2)kT. Set that equal to (1/2)m V^2, and solve for T.

T = m V^2/(3 k)

m is the mass of a nitrogen molecule and k = 1.38*10^-23 joule/K

• Physics -

thanks

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