Multiple Choice
A helicopter stays aloft by pushing large quantities of air downward every second.What mass of air must be pushed downward at 35.0 m/s every second to keep a 1,050-kg helicopter aloft?
A) 30 kg
B) 294 kg
C) 304 kg
D) 284 kg
E) 289 kg
Correct Answer:

Verified
Correct Answer:
Verified
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