One other thing to consider in regard to a discussion of V1 is the effect on takeoff distance. The lower your V1, the shorter the accelerate-stop distance, but the longer the accelerate-go distance. If you increase V1, then obviously your stopping distance is longer and your going distance is shorter.
In most jet aircraft, V1 is set so that the accelerate-go distance is equal to the accelerate-stop distance, thus giving you a "balanced field." This will also equal the shortest absolute runway requirement.
In most jet aircraft, V1 is set so that the accelerate-go distance is equal to the accelerate-stop distance, thus giving you a "balanced field." This will also equal the shortest absolute runway requirement.