Square each speed, add them together and divide by eight. To find their mean speed simply add up the speeds and divide by eight - and then square your answer. ![]() Their mean speed squared is simply that - find the mean speed and square it! Such a figure has no physical significance to us as physicists - it is purely a mathematical exercise. ![]() Let us calculate their mean speed squared and their mean square speed. The mean square speed is different from the mean speed squared - careful with how you express yourself in answers! The 'bar over the top' means the mean (average) of all of those squared speeds. ![]() 'c' is used as the symbol for the speed of a particle ![]() A Level and AS level - UK KS 5 (Age 16 - 18).GCSE and 'O' Level - UK KS4 (Age 14 - 16).
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