Kilometers
both!
You would use CM or INCHES to measure a knife
I would use my legs, not a measurement! To measure the distance, I would use metres.
You would use the measurement of "miles".
Yards
It would depend on the size and type of roller coaster.
A roller-coaster would go faster with more people in it because with moer people the better the ride alsothe people that are ridding will give the roller-coaster potential energy. A roller-coaster would go slower with an empty car will give the roller-coaster kinetic energy than with peolpe in it.
the roller coaster would crack and break apart because of the velocity. It is to much for a roller coaster to handle.
Well that really depends the earliest ride that would be close enough to a roller coaster would be an equivalent of a luge run.
If you think about this, you can figure it out. A roller coaster is a fast, scary ride. If something is like a roller coaster ride, it would be a very busy experience that is fun, but also slightly scary.
It would not move
When you are going down you have the most potential energy because the roller coaster and the speed is helping you go faster!
Going up and down
At the peak.
both!
To build potential energy, which is converted to kinetic energy upon descent. The higher up the roller coaster climbs, the more potential energy it builds, thus having more kinetic energy upon descent. Since there are no motors or engines, roller coasters are reliant on this back & forth transfer of energy.
Well, to understand what a roller coaster does you will need to understand what a roller coaster is. A roller coaster is a small vehicle that runs along a fixed track. What a roller coaster does is move along that fixed track at very high speeds, and many people find this very thrilling And if your wondering how a roller coaster works Well, there are 2 types of roller coaster, most commonly the Chain Lift, The chain lift works by hooks on the bottom of the roller coaster car that hook on to a roller chain (the type of chain you would find on a bicycle) and the chain pulls you all the way to the top of the big hill, This is the part where you hear all the clicking. As you start going down the big hill the hooks simply slide out of the chain and gravity starts to take over, but the roller coaster can stay moving because of Kinetic energy and Potential energy. So the 3 things that are very important to a Roller Coaster are Kinetic energy, Potential energy, and gravity. A roller coaster works sort of like rolling a ball down a hill. For info on the launched roller coaster check out the related links.