Physics
DarkJedi
17

Calculate the kinetic energy of a 100.0-kg meteor approaching the Earth at a speed of 10.0 km/s. Remember that 1 km = 1000 m.

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(2) Answers
CarmelinaTenda681

KE=1/2 x mass x speed^2 Substitute: KE=1/2 x 100 x 10000^2 5000000000J of KE So either 5 gigajoules Or 5x10^9J

BettieZumbrunnen

Kinetic Energy = (1/2) (mass) (speed squared) Mass = 100 kg Speed = 10 km/s = 10,000 m/s Speed squared = 100,000,000 m²/s² 1/2 (M)(V²) = 1/2 (100) (100,000,000) = 5,000,000,000 joules  (5 x 10⁹ J) That's  5 billion joules. That's the amount of energy a 100-watt light bulb uses in  579 days.

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