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footfootfoot · 05-22-2011, 05:41 PM

Out of curiosity I crunched some numbers relating to the values given in that clip.

The Formula for Kinetic Energy is EK=(1/2)mv²
the .22 is .0375Kg moving at 304.8mps
the .17 is .017Kg moving at 777.24mps

(1/2) .0375*304.8² = 1742 joules
(1/2) .017*777.24² = 5134 joules

So the .17 has nearly three times the energy of the .22!

One joule can also be defined as:
The work required to move an electric charge of one coulomb through an electrical potential difference of one volt, or one '"coulomb volt" (C·V). This relationship can be used to define the volt.
The work required to produce one watt of power for one second, or one "watt second" (W·s) (compare kilowatt hour). This relationship can be used to define the watt

05-22-2011, 05:41 PM	#44
footfootfoot To shreds, you say? Join Date: Aug 2004 Location: in the house and on the street-how many, many feet we meet! Posts: 18,449	Out of curiosity I crunched some numbers relating to the values given in that clip. The Formula for Kinetic Energy is EK=(1/2)mv² the .22 is .0375Kg moving at 304.8mps the .17 is .017Kg moving at 777.24mps (1/2) .0375304.8² = 1742 joules (1/2) .017777.24² = 5134 joules So the .17 has nearly three times the energy of the .22! One joule can also be defined as: The work required to move an electric charge of one coulomb through an electrical potential difference of one volt, or one '"coulomb volt" (C·V). This relationship can be used to define the volt. The work required to produce one watt of power for one second, or one "watt second" (W·s) (compare kilowatt hour). This relationship can be used to define the watt __________________ The internet is a hateful stew of vomit you can never take completely seriously. - Her Fobs