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 1 500-kg helicopter aloft?
A)42.9 kg
B)420 kg
C)430 kg
D)410 kg
E)415 kg

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The Answer of 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 1 500-kg helicopter aloft?
A)42.9 kg
B)420 kg
C)430 kg
D)410 kg
E)415 kg

A Helicopter Stays Aloft by Pushing Large Quantities of Air