Final answer:
To have a momentum of 1.60x10^9 kg·m/s, the airplane would have to fly at a speed of 8.00x10^4 m/s.
Step-by-step explanation:
To calculate the speed at which the airplane would have to fly to have a momentum of 1.60x10^9 kg·m/s, we can use the equation:
Momentum = mass x velocity
So, rearranging the equation to solve for velocity:
Velocity = Momentum / Mass
Plugging in the values:
Velocity = (1.60x10^9 kg·m/s) / (2.00x10^4 kg)
Velocity = 8.00x10^4 m/s
Therefore, the airplane would have to fly at a speed of 8.00x10^4 m/s.