How are roller coasters and water slides similar?

i dont think they are similar

Explanation:

Water slides are slides with water on them. It is a wet, bathing suit experience used with gravity, the water making the slide down more fun and easy whereas roller coasters isn't a water activity and involves a motor to run it, like a type of vehicle.

They're the same because it takes you somewhere for a short distance, eventually ending and having to restart again. They are both a nice and fun experience (in my opinion) too.

the maximum speed limit is 55 mph on a two-lane undivided highway and for vehicles towing trailers.