[Andrews54757]

You won't gain additional momentum from a loose belt. But a loose belt may give your body the chance to slip out. The impulse you feel from a tight belt will be no less than the impulse you feel from a loose one.

[jerzmacow]

I disagree, a tight belt will cause the least amount of injury. Look at fall arrest systems.

If you're harness is loose, or your line is slack without an energy absorber, it'll break your back when you fall!

[hollerith]

>The impulse you feel from a tight belt will be no less than the impulse you feel from a loose one.

I don't see any interpretation of that that makes it true.

[alan-hn]

Impulse is constant, its the force that is transferred to your body. This is constant whether or not a belt is worn.

A belt simply takes that force and redistributes it into the seat frame, if the belt is not worn the force is not redistributed by the belt but rather by your head into the overhead bin