Lift Equation troubles! Please help!?

Question

An aircraft flies at 100 m/s and a lift of 15kN is produced. When the aircraft flies at 150 m/s, what is the lift produced?

Answer 1

Air craft lift L₁ at velocity 100m/s = 15 kN

Velocity v₁ = 100 m/s

Another velocity v₂ = 150 m/s

Air craft lift L₂ at velocity 150 m/s = ?

Formula :

L₁/L₂ = ( v₁/v₂)²

15*1000/L₂ = ( 100/150)²

151000/L₂ = 0.444

L₂ = 15000/0.444

L₂ = 33750

L₂ = 33.75 kN

Air craft lift at velocity 150m/s is 33.75 kN