AP Physics 1hardmcq1 pt
A rocket engine expels 200 kg of gas per second at 3000 m/s relative to the rocket. The power of the exhaust jet is about
A.9.0×10⁸ W
B.6.0×10⁵ W
C.1.8×10⁹ W
D.4.5×10⁸ W
Explanation
Core Concept
P = ½(dm/dt)v² = ½(200)(9×10⁶) = 9.0×10⁸ W.
Correct Answer
A9.0×10⁸ W
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