An aircraft with a turboprop engine produces a thrust of $500 \mathrm{~N}$ and flies at $100 \mathrm{~m} / \mathrm{s}$. If the propeller efficiency is $0.5,$ the shaft power produced by the engine is

(A) $50 \mathrm{~kW}$

(B) $100 \mathrm{~kW}$

(C) $125 \mathrm{~kW}$

(D) $500 \mathrm{~kW}$

An aircraft with a turboprop engine produces a thrust of $500 \mathrm{~N}$ and flies at $100 \mathrm{~m} / \mathrm{s}$. If the propeller efficiency is $0.5,$ the shaft power produced by the engine is

(A) $50 \mathrm{~kW}$

(B) $100 \mathrm{~kW}$

(C) $125 \mathrm{~kW}$

(D) $500 \mathrm{~kW}$

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