test pilots like to eat and be eaten by members of their preferred sex?
1.3 x 1.3 - 1.69
I am not sure if that will point you in the right direction
Silly/Stupid joke aside.
it is important to remember the V^2 component of the lift equation. and to think of other great points mentioned so far, such as roll out go around
1.1 x 1.1 = 1.21
giving only .21 of a g to arrest the flair and no margin for any other mishaps such as , Opps, there was a gust or sheer or we are landing short lets pull up to get inside the fence.
1.2 x 1.2x = 1.44
similar to 1.1 but not so dramatic, controles are still slugish?
1.4 x 1.4 = 1.96 now that's a great amount of lift and more than enough to arrest a decent. but may be the controls are a bit sensitive. and will we stay inside the fence at the deep end of the runway?
F=Ma
De accelerating an aircraft takes a lot of force/energy, and tires take a pounding when landing. break pads of current design get very hot.
I Like 1.3 x 1.3 = 1.69
This post best read while thinking of some thing else. (that way you may actually forget it)