[Old Lady]

Whatever. Seatbelts keep you from going through the windshield if you are hit from behind. Good enough reason to wear one.

[spunkets]

"Seatbelts keep you from going through the windshield if you are hit from behind."

I see you're a physics wiz.

"Good enough reason to wear one."

It's my decision, not anyone else's.

[yooper]

"Whatever. Seatbelts keep you from going through the windshield if you are hit from behind. Good enough reason to wear one."

Uh, if you are hit from behind, the laws of physics would propel you backwards, at least until something hit you from the front.

[Old Professer]

If you get hit from behind you go backward first, most car seats give way in a severe incident and don't translate the conserved momentum toward a forward, matching force.