What is the kinetic energy of a 10 g bullet moving at 300 m/s?

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30-09-2016
Physics

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What is the kinetic energy of a 10 g bullet moving at 300 m/s?

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AL2006 AL2006 · Answer 1 · 2016-09-30T21:06:18+02:00

    Kinetic energy = (1/2) (mass) (speed)²

mass of the bullet = 10 grams = 0.01 kilogram
speed of the bullet = 300 m/s

Kinetic energy = (1/2) (0.01 kg) (300 m/s)²

      = (0.005 kg) (90,000 m²/s²)

      =    (0.005 x 90,000) kg-m²/s²

= 450 kg-m²/s²

= 450 joules