If a nitrogen atom and a slightly heavier oxygen atom have equal kinetic energies, which has the greater average speed?
A)nitrogen
B)oxygen
C)both the same
D)need more information

Question

Quizplus · Accepted Answer

Two particles with equal kinetic energies have their average speeds inversely proportional to the square roots of their masses. Since nitrogen is lighter than oxygen, it has the greater average speed. Therefore, the answer is Choice A) nitrogen.

If a Nitrogen Atom and a Slightly Heavier Oxygen Atom