Yes, the speed is affected by the mood of the vacuum. The happier the vacuum the faster the speed of light. I recommend a Henry if you’re trying to achieve top speed.

For best results I would use a Kirby brand vacuum. Preferably the pink, puffball shaped model.

It depends on the the amount of stuff crammed into the bag. That’s what the c stands for in e=mc², cram.

I’m so disappointed nobody pointed out how badly this question sucks.

Bagless vacuums are actually slower for light. If you listen to them closely they will say that canister vacuums are not their bag.

Yes.