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A 10 kg rock falls from a 20 m cliff. What is the kinetic and potential energy when the rock has fallen 10 m?


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Sagot :

FierceFireflieeidn

Answer:-

  • Mass =m=10kg
  • Height=20-10=10m=h
  • Acceleration due to gravity=g=10m/s^2

We know that

[tex]\boxed{\sf E_P=mgh}[/tex]

[tex]\\ \sf\longmapsto E_P=10\times 10\times 10[/tex]

[tex]\\ \sf\longmapsto E_P=10^3[/tex]

[tex]\\ \sf\longmapsto E_P=1000J[/tex]

According to law of conversation of energy

[tex]\boxed{\sf E_K=E_P}[/tex]

[tex]\\ \sf\longmapsto E_K=1000J[/tex]