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# Science Project: The Water Slide

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## Dan Forester

on 18 January 2013

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#### Transcript of Science Project: The Water Slide

How the ride relates to: Chapter 1 (Motion) the log is constantly moving, or in motion
the distance between the beginning and end of the ride is five feet
the log's speed, or the distance it travels per unit of time, is very fast at a certain point (instantaneous speed) and then slows down and stays almost constant, decreasing its average speed
its velocity is changing as well, with the log changing direction in a spiral
the log accelerates in two ways: increasing speed and changing direction Introduction: How the Ride Functions the ride is made out of a plastic tube, and the log flows through the tube with water being pumped into the tube
the log speeds down through the tube, with its velocity always changing (the tube is in a spiral)
when the log reaches the end of the ride, it goes into a bucket
the base is made out of styrofoam and cardboard, and the ride is supported by coat hangers
the water flows into a bucket at the end of the ride (the same bucket where the log falls into), where the water pump is, creating a water pump cycle
there are many props that are used to decorate the ride By Dan Forester, Andres Gonzalez, Bay Hodge, and Tate Huffman How the ride relates to: Chapter 2 (Forces) How the ride relates to: Chapter 3 (Work and Machines) The water pump is a compound machine, which is a machine that is made of two or more simple machines that makes work (force times distance) easier
It makes work easier by pumping water into the tube by itself instead of having to dump water into the tube manually
The machine's input force is a gear spinning inside the pump that sucks the water inside it
The machine's output force is the same gear which pumps the water out of the other end of the pump, thus sending the water down the tube
The gear in the pump is an example of a wheel and axle, because the gear acts as the wheel, and spins when the axle does, sucking the water in the pump, and pumping it out the other end How the ride relates to: Chapter 4 (Energy) The Law of Conservation of Energy states that energy is never made or destroyed, but transformed between different forms
Many energy transformations take place during the ride
When the ride is at it's peak, the log has a lot of gravitational potential energy, which is basically the log's potential to be affected by gravity
When the log is at the bottom of the ride, the log has a lot of kinetic energy, essentially the energy of movement
When gravitational potential energy goes up, kinetic energy goes down Amusement Park Ride Project: Water Slide The original inspiration: Playland's Log Flume The ride's main support system:
unwound coat hangers force (a push or a pull) is exerted on the log by the moving water
they exert force on each other as well; this is known as friction
- because the log is moving through water, this is categorized as fluid friction
- when the log sometimes rubs against the tube, sliding friction occurs
the log goes downwards because gravity pulls it towards the ground, as Earth is such a massive object that the force pulling objects toward it outweighs the force that pulls any other objects toward each other
- if the log had more mass, or matter, it would have a stronger gravitational
attraction to Earth, as gravitational attraction is affected by mass and distance
we can determine the log's momentum (essentially a numerical characteristic of a moving object) by multiplying its mass by its velocity Any Questions? Thanks for watching and enjoy the ride! input force: the gear sucking the water into the pump output force: the gear releasing the water out through the tube the wheel part of the wheel and axle "The Hulk" a girl accelerating in a water ride the difference between potential and kinetic energy in this water ride, fluid friction creates a splash
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