- #1
Miri
- 36
- 0
Homework Statement
An aircraft has a lift-off speed of 40m/s. How long does it take the aircraft to be airborn after a takeoff run of 320m?
Homework Equations
I know that I have to divide 320m by the speed (40m/s). But if I do that, I get a wrong result. The result should be 16s and this is only true if I use half of the speed (20m/s). Can somebody explain me why I have to take half of the speed? Thanks