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levacccp [35]
3 years ago
7

What is the kinetic energy of an object moving 40m/s with a mass of 20kg?

Physics
1 answer:
Svet_ta [14]3 years ago
7 0
KE = (1/2) (mass) (speed)²

KE = (1/2) (20 kg) (40 m/s)²

KE = (1/2) (20 kg) (1,600 m²/s²)

KE = (10 kg) (1,600 m²/s²)

KE = 16,000 Joules
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Answer:

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Answer:

\boxed{\sf Heat \ produced \ (H) = 5 \ kWh}

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Formula:

\boxed{ \bold{ \sf H = I^2Rt}}

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\sf \implies H =  {5}^{2}  \times 100 \times 2 \\  \\ \sf \implies H = 25 \times 100 \times 2 \\  \\  \sf \implies H = 5000  \\  \\ \sf \implies H = 5 \: kWh

\therefore

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