A 200 cc scooter will go around 70 -75 mph on average. This is plenty of speed for cities and 55 mph roads, but nothing more. They are not great for the free way, even though it is legal. I would look into a 400 cc scooter, like the Yamaha majesty for the free way. These will go 80 mph all day long into the wind, and approach 106 mph.
Yes i believe you do if its a 200cc scooter
70ish
about 120 mph I disagree with ^ above, a 200cc chopper only goes as fast as the displacement it can average between 65mph and 90mph depending on where it is set at, however a 200cc motorbike could possibly go 120mph with the proper displacement.
About 95 kph give or take
very fast
as fast as it can
about 160-180mph
as fast as you want it too go
The grass has more friction than the concrete, so the scooter doesn't go as fast
200cc four stroke single engined karts have a top speed mine went at top speed of 55 mph RK 200cc 56WS Atv 200cc two strokes or twin-engined four strokes will be considerably faster so it depends what sort of kart you mean.
100mph
about 6000mph