Following a take-off, limited by the 50 ft screen height, a light twin climbs on a gradient of 5%.It will clear a 160 m obstacle in relation to the runway (horizontally), situated at 5 000 m from the 50 ft point with an obstacle clearance margin of:A

1) Following a take-off, limited by the 50 ft screen height, a light twin climbs on a gradient of 5%.It will clear a 160 m obstacle in relation to the runway (horizontally), situated at 5 000 m from the 50 ft point with an obstacle clearance margin of:A

2) Regarding take-off, the take-off decision speed V1:

3) A decrease in atmospheric pressure has, among other things, the following consequences on take-off performance:

4) An increase in atmospheric pressure has, among other things, the following consequences on take-off performance:

5) How does runway slope affect allowable take-off mass, assuming other factors remain constant and not limiting?