[edwinland]

Haha! It was a catapult take off from an aircraft carrier in a Grumman C-2 Greyhound. One website says that it accelerates to 150 mph in 3 seconds. Another says that catapulted fighter jets get to 60 in .79 seconds:

https://aviation.stackexchange.com/questions/45880/what-is-the-0-60mph-time-of-an-aircraft-carrier-catapult#:

It was one of the most intense feelings of my life. The most memorable part of it was the fact that the acceleration was (or at least felt) perfectly constant. It did not feel like we were suddenly jerked from a standstill. If felt like a giant began to pull us and pulled firmly but oddly gently for a few seconds and then let us go.

[Deaf Smith]

Saw a vid of a sedan being catapulted off a carrier.

[Svartalfiar]

It was one of the most intense feelings of my life. The most memorable part of it was the fact that the acceleration was (or at least felt) perfectly constant. It did not feel like we were suddenly jerked from a standstill. If felt like a giant began to pull us and pulled firmly but oddly gently for a few seconds and then let us go.

Actually, you certainly were jerked.

Position is where you are.
Velocity is where you're going.
Acceleration is what pushes you back in your seat.
Jerk is what pushes you in your seat harder or softer.
Snap is the changing of how hard or soft you're pushed.
Crackle and Pop are just getting way deeper than almost anyone ever needs to go into this.

[EVO X]

I did the landing, but not the take off. This article describes both.

https://theaviationist.com/2009/10/27/flying-to-from-an-aircraft-carrier-with-a-c-2-greyhound/