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Which dog has the most kinetic energy? A. A dog of mass 10 kg running with speed 6 m/s B. A dog of mass 8 kg running with speed 4 m/s C. A dog of mass 12 kg running with speed 5 m/s D. A dog of mass 15 kg running with speed 3 m/s​

Respuesta :

jcherry99

Answer:

J stands for Joules.

A has the most KE

Explanation:

Dog A

  • En = 1/2 m * v^2
  • m = 10 kg
  • v = 6 m/s
  • En = 1/2 10 * 6^2
  • En = 5 * 36
  • En = 180 J

Dog B

  • En = 1/2 m * v^2
  • m = 8 kg
  • v = 4 m/s
  • En = 1/2 8 * 4^2
  • En =   4 * 16
  • En = 64 J

Dog C

  • En = 1/2 m * v^2
  • m = 12 kg
  • v = 5 m/s
  • En = 1/2 12 * 5^2
  • En =   6 * 25
  • En = 150 J

Dog D

  • En = 1/2 m * v^2
  • m = 15 kg
  • v = 3 m/s
  • En = 1/2 3 * 3^2
  • En =   1.5 * 9
  • En = 13.5 J

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