TED Conversations  Daryan Sankar  This conversation is closed.
Start a new conversation or join one »  Unit of measurment of C
in E=MC^2 to use?  The c in this equation stand for the velocity
of light right? Well depending of what unit of velocity I use,
wouldn't that change the answer I get? What unit should i use?
progress indicator   • thumb     Oct 5 2012: You should use
whatever units you want E to be, since E will be in whatever
units you've started with for M and C. For instance, if you want
E to be expressed in kg·m/s^2, then your velocity of light
should begin in m/s^2, not km/hr^2 and certainly not miles/s^2.
Remember that the units you begin with will carry across the
entire equation.     • Oct 5 2012: This.     • thumb       Oct 5
2012: Just to be clear, pedantic even, Energy is always
expressed in joules. It would never be correct to express Energy
in Kg X m/s^2.       • Oct 5 2012: It's the same thing, it
really doesn't matter if you choose to express it in joules or
kgm/s^2.       • thumb