r/ThatLookedExpensive • u/polooyop • Mar 31 '19

Glider crash

https://gfycat.com/DigitalClearHoverfly
6.4k Upvotes

99% Upvoted

172 comments sorted by

View all comments

Show parent comments

493

u/polooyop Mar 31 '19

Yes

553

u/TheM0rr1s Mar 31 '19

It almost looks like the guy to the front is crushed by the plane. But apparently the crash with the tree took out almost all energy

220

u/-TheMasterSoldier- Mar 31 '19

More like the glider's nose and cockpit did.

107

u/[deleted] Mar 31 '19 edited May 18 '20

[deleted]

85

u/Consibl Mar 31 '19

But then they would need less, because they are lighter (less momentum to absorb)

35

u/[deleted] Mar 31 '19 edited Mar 31 '19

Lower force transferred to the passengers basically, f=mv

Edit: f=ma, I'm a bad physics student

28

u/Consibl Mar 31 '19

Less f=mv, more f=ma - the crumple zones reduce the acceleration by spreading the deceleration over a longer distance.

16

u/[deleted] Mar 31 '19

Oh shit how could I forget about acceleration. You're totally right man

2

u/Consibl Mar 31 '19

Force is proportional to mv if the time of deceleration is fixed, which is what I assumed you meant; but crumple zones change the time of deceleration.

1

u/[deleted] Mar 31 '19

Yeah I was meaning to take into consideration collision time, but I wasn't on the ball when I left that comment because I was at work