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From the expression E = mgh for potential energy, how can I express the unit of energy, the joule, in terms of kilograms, metres and seconds? could anyone explain to me what this question is asking me for cuz I don't understand it, to be honest? thanks

  • Physics -

    E=mgh=kg*m/s^2*m= kg*m^2/s^2= joule
    so the joule is a "derived" unit, that is, it is not a fundamental unit.

  • Physics -

    thank you bobpursley

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