How to make object roll forward (keeping its momentum)

I’m scripting a skateboard, and it’s not quite what I want so far

I want the skateboard to roll forwards (keeping some of its speed) instead of stopping abruptly once the player stops pushing the skateboard forward

I’ve tried using a VectorForce, but the player is slowed down significantly by the object below them. If the player jumps, it makes them go flying across the map. I’ve also tried making the skateboard frictionless, but it didn’t do anything different

What do I do?

Once the player releases the key, you can use a tween to slow down your skateboard.

Yes, that’s what I tried to do with the VectorForce. I couldn’t get this to work, and even if it did work, the VectorForce would still fling the player once they jumped