Centripetal and Centrifugal Force- Motion along a curve or though a circle is always caused by a centripetal force

G- A "G" is a unit of acceleration equal to the acceleration caused by gravity

Momentum- Quality of motion that object possesses

Weightless- the rider no longer feel an external force acting upon their bodies

• -Acceleration is used in roller coasters by increasing or decreasing the speed and angle of the roller coaster.
  
• -Centripetal and Centrifugal Force in roller coasters are the loopy lops.
  
• -I think G's helps with roller coasters because they help the passengers to say on their seats when there's a sudden drop or when their upside down.
  
• -Momentum is used so that he roller coaster can continue on the rails.
  
• -You sometimes feel weightless when you are going down a drop. Riders might feel weightless, but really they aren't.
  

(I don't own any of these pictures)

Soon, a mining company in Sumit Hill, Pennsylvania constructed the Mauch Check Gravity Railroad in the 1850's. With a 8.7 mile (14 km) downhill track and a brakeman-controlled. At first, it was used to bring coal and other materials to the mines and out. Then in 1872, the "Gravity Road" provided a thrilling ride for only 50 cent a ride.

Popularity grew on roller coasters in the 1880's. Roller coaster were being left to right, for example the Loop the Loop, and the Flip Flap Railway. However, these rides were dangerous, many passengers suffered whiplash. So, those roller coasters were dismantled and looping coasters had to wait for over half century for their comeback.

In 1912, a man name John Miller created the first under friction roller coaster. Then, roller coasters spread to amusement parks all over the world. For example Six Flags and Disneyland

Finally, in 1959, Disneyland introduced a new design break through in roller coaster with the Matterhorn Bobsled. The first roller coaster using tubular steel tracks. What makes this ride special? The steel tracks, the steel tracks can be bent in any direction, which allows designers to create loops, corkscrews, and many other maneuvers into their design.

• One of the tallest and fastest looping coaster

• Red and white steel
  
• 188 feet and slithers down 70 miles per hour

• Batwing- A heart-shaped roller coaster(turn riders upside down)
  
• Butterfly Inversion- Starts with normal loops, but as the track goes up it twist 45 degrees
• Camel-back- There's a hill/bump
• Cobra Roll- Rider traverse forward through an upward half-vertical loop
• Corkscrew-Rotates riders 360 degree perpendicular to the track
• Hammerhead Turn- Turns a 180 degree overbank turn
• Heartline Roll- The rider performs a 360 degree roll near the middle
• Horseshoe- 180 degree turnaround with high banking so that riders are titled at a 90 degree angle
• Immemlman Loop- half loop, then go through a half twisted and curve out into the opposite direction
• Pretzel Loop- Downward half loop and upward loops
• Raven Turn- half inversion which look like half a loop followed by a drop and then comes to the where it was at the beginning
• Sea Serpent Roll- Turns 180 degrees
• Top Hat- A hill with 90 degree angles ascent and descent

The reason is because the cart holds a lot potential energy at the beginning. Then once the cart falls, it releases a large amount of kinetic energy.

-The first test had a time of 2.2 seconds, meaning the speed will be 2.23 m/s

-Our second test had a time of 2.1 seconds, meaning the speed will be 2.3 m/s

-Finally our third test had a time of 2.39 seconds, meaning the speed will be 2 m/s

-Overall, the average time is 2.2 seconds, meaning the average speed is 2.23 m/s

Also, the amount of potential energy used for the Helicarrier is about, 0.09 joules and the amount of kinetic energy is about 0.007 joules.