Rope Trick

its not an item so no effect 

the bag says that it only has an adverse effect on being inside an item that is a dimensional space

Quote from DragonRiderHN >>

What happens if the rope is moved? Can it be moved? What if the lower end of the rope is destroyed (i.e fireball) or cut away? Does the space fall until the rope is once again touching the ground?

Quote from Krodothlhren >>

My Question is how does this spell work when cast while on a moving object like a ship or a wagon?

Quote from DavrosMandrake >>

Been through the thread looking for guidance and on the subject of Bags of Holding I think the question should be:

"What happens if you Open a Bag of Holding inside the dimensional space?"

However, that is not why I am here, instead its to see what is thought on the subject raised by one of my players "If I were to cast rope trick in the back of a moving cart what would happen? Would it be anchored to the space in the cart or would it remain stationary relative to the ground. If relative to the ground, would it being cast in the enclosed cabin of a wagon make any difference."

The same would apply to casting the spell on the deck of a ship or in one of the cabins, or even in the compartment of a lightning rail.

 
As a DM, not a rules lawyer (so no references, just house ruling and fun with friends) :

I would personally allow the extradimensional space to move with the transport as long as:
One end of the rope is tethered via the Spell at one end(inside the Rope trick, the rope's end sits in the middle of the entrance) and the other would have to be tethered in the casting plane (to the cart, ship, lightning rail car).
IF THE ROPE WAS UNTETHERED from the CASTING PLANE - The movement the having no momentum would stop being transported (With the transport moving away with no damage, even through walls and creatures may get in the way - it's not in our space), with no one aware within the "Space" unless looking through the entrance.
IF THE ROPE WAS UNTETHERED from the extradimensional space(Rope put in a backpack), dispelled by caster, Time expires - The contents of the extradimensional space is dumped back into the Casting plane, where the entrance resides.
Known problems: 
It makes the rope trick a 'balloon on a string' with a party inside: so I'd say it cannot move unless it is tethered to a structural part of the transport (towed/secured). Otherwise your ruling a free 1 hour immovable rod with the breaking strain of the rope. 

My question is this:

Could you put the party members in the interdimensional space, and have a party member with Boots of Speed, grab the end of the rope and Take off running for the duration of the Boots of speed, would that Interdimensional space move with the person running with the end of the Rope. 

It doesn't say anything about the Space being able to move if the Rope end is moved?  I of course Say YES...

Hey everyone so something I found out is this is great for someone to abuse by sticking your head out casting a spell then going back in on the end of your turn if anyone has a loophole for this please help im dealing with a midmaxer in my campaign 

Also avalible to 3rd level Drakewarden Rangers

   The DM pulling a TPK because the wizard didn't take off his bag of holding

Quote from Akamoria >>

Can this become a Mortal Kombat fatality move? 😏🤭😈

Tie a noose in the rope, grapple the baddie and cast this hang them

******* Ruthless

ps: would that actually work?

 Why not

Quote from Owenator2000 >>

Quote from Akamoria >>

Can this become a Mortal Kombat fatality move? 😏🤭😈

Tie a noose in the rope, grapple the baddie and cast this hang them

******* Ruthless

ps: would that actually work?

 Why not

 There are a couple of reasons it might not work, and would ultimately be heavily DM-dependant.

For example, the end of the rope which rises isn't a player choice. You could get a noose round someone's neck, and then the opposite end of the rope rises, but only to the length of the rope so it "hangs perpendicular", so it wouldn't tighten around the neck. Alternatively, the noosed-end could rise and potentially take the creature with it, but if the creature has use of their hands, they could probably escape the noose, and at that point they're in an impenetrable inter dimensional space, 60ft above you.

It would be funnier to send them up there and then immediately dismiss the spell, causing them to take 6d6 damage after falling 60ft to the ground.

Step 1: Carry around 1 inch of rope.

Step 2: When an ally falls in combat, stand over them, hold the rope against their chest, and cast Rope Trick.

Step 3: You and your ally are now, for all intents and purposes, inside an impenetrable extradimensional space for the next hour (or as long as you need to stabilise/heal them).