# Discovering roller coasters by day66380

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```									                        Discovering
roller coasters

Joshua
Physicist
Spring 2005
Dover Middle School
http://annekaringlass.com/2013                         http://www.realcoasters.com/
3%20Roller%20Coaster,%206%                             images/wall/loch_1152.jpg
20Flags,%20Solano,%20CA.jpg
Objectives
Motion 1. The velocity
of an object is the rate
of change of its
position. As a basis for
understanding this
concept:

1. b. Students know that
average speed is the
total distance traveled
divided by the total
time elapsed and that
the speed of an object
along the path traveled
can vary.
http://www.coastersandmore.de/rides/typhoon/looping_s
tar_04.500x665.jpg
Objectives(cont.)
1. c. Students know
how to solve problems
involving distance,
time, and average
speed.

1. f. Students know
how to interpret
graphs of position
versus time and
graphs of speed
versus time for
motion in a single
direction.

http://www.picturesof.net/_gallery/_Architecture/_SM/roller_
coaster_medusa_ed5_SM.jpg
Words to Know
Velocity-how fast an object moves and where it
goes(north,south,east,or west).For example,if a
car travels north to Mt.Shasta and it’s speed is
65 mph, then its velocity is 65 mph in a
northward direction.
Gravity-the force that pushes us towards the
earth.For example,gravity makes an apple fall
from a tree
Acceleration-the rate at which the speed or
direction of an object changes.For example, when
a car turns a corner it changes direction or
acceleration.
Words to Know(cont.)
G-force-the force exerted on an object by
gravity depending on its mass. For example, on
Earth you experience 1 G and on Jupiter you may
experience 20 G which is 20 times what you
feel on Earth.
Potential Energy (PE)-the energy an object has
due to its height and mass.For example, when you
are on a roller coaster and you are on top of its
hill you have more potential energy there than
any other place on the ride.
Kinetic Energy (KE)-the energy an object has due
to its speed and mass.For example, a roller
coaster rider has more kinetic energy when it is
going fast at a minimum height.
Words to know(cont.)
Centripetal force-the force that holds you in the
car of a roller coaster when you go in a loop
Supplies
2 six foot sections of
¾ inch inner
diameter, thin wall,
pipe insulation track
1 marble
cup
8 twenty cm sections
Stopwatch
Balance
Digital camera
How a coaster works
1) Does a coaster have an engine?
No
2) What conversion process drives
a roller coaster? PE turns into KE
3) When you are at the top of a
hill, what type of energy is this
called? PE

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