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# Pyshics Rollercoaster project

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by

## Raisa Haque

on 5 September 2013

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#### Transcript of Pyshics Rollercoaster project

THE BASICS:
A roller-coaster is a machine that uses inertia and gravity to send a cart along tight turns and steep slopes.
Gravity and Inertia
POTENTIAL AND KINETIC ENERGY
Potential Energy:
Stored energy of an object (in this case, the roller-coaster train) due to its position.

Centripetal Force
Centripetal force
is a "center-directed" force that causes an object to follow a curved or circular path.
CENTRIPTAL FORCE!

When going upward, roller-coasters have potential energy. and kinetic energy when going down.
With centripetal force and gravity, the roller coaster is able to travel in upside-down rotations; resulting in more thrilling experiences for riders!
Gravity:
The force of attraction towards the center of the earth
Gravity is one of the key parts of a roller-coaster! It assists the roller-coaster train in accelerating downward.
Inertia:
The tendency of a body to resist change in motion or continue its state or rest or constant speed until acted upon by an external force.
Inertia keeps the roller-coaster moving when the track is at level or uphill. Once the roller coaster is at the top of the first hill and detaches from the lifting chain, the only energy it has is gravitational potential energy (and a little kinetic energy--the energy of motion).
For example, centripetal force is applied when the roller-coaster train circles a path upside-down.
http://library.thinkquest.org/26455/amuse/roller/roller02.shtml
The Physics of Roller-Coasters!
by Sydney Nguyen, Raisa Haque, and Tiffany Alcantara
Greatest potential energy
Kinetic energy increases
Greatest kinetic energy and lowest potential energy
Potential energy increases again
Potential/Kinetic Energy in Motion!
That's all, folks!
Kinetic Energy:
The energy an object has because of its motion or movement.

Brief History of Roller-Coasters
The beginning of roller-coasters started back in the 17th Century, by the Russians. There were "Russian Mountains," which were basically Russian ice slides. The slides were as high as 70-80 feet.
Scenic gravity railroads were developed in Summit Hill, Pennsylvania.
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