omardaabes76 omardaabes76
  • 26-08-2018
  • Physics
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An object has 100J of KE. It has a mass of 10kg. How fast is it travelling

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emojiman
emojiman emojiman
  • 26-08-2018

[tex]k = \frac{1}{2} mv {}^{2} [/tex]
[tex]100 = \frac{1}{2} \times 10 \times v {}^{2} [/tex]
[tex]100 = 5v {}^{2} [/tex]
[tex]v {}^{2} = 20[/tex]
[tex]v = \sqrt{20} = 2 \sqrt{5} [/tex]
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