Energy Launcher. Project #2 Introduction to Transportation. Objectives. After completing this activity, students will be able to: State the differences between Potential and Kinetic Energy. Calculate the amount of force and work your project has.
Introduction to Transportation
After completing this activity, students will be able
Potential Energy is the same as stored energy.
The "stored" energy is held within the gravitational field. When you lift a heavy object you exert energy which later will become kinetic energy when the object is dropped. A lift motor from a roller coaster exerts potential energy when lifting the train to the top of the hill. The higher the train is lifted by the motor the more potential energy is produced; thus, forming a greater amount if kinetic energy when the train is dropped. At the top of the hills the train has a huge amount of potential energy, but it has very little kinetic energy.
“Kinetic energy" is the energy of motion --it's ability to do work.
The faster the body moves the more kinetic energy is produced. The greater the mass and speed of an object the more kinetic energy there will be. As the train accelerates down the hill the potential energy is converted into kinetic energy. There is very little potential energy at the bottom of the hill, but there is a great amount of kinetic energy.
The absolute top position of the ball being thrown before it starts to come back down is called an Apogee.
To measure Apogee we need two things: Tangent Angle and an
approximate distance away from the object being measured. Usually Altimeters are for measuring vertical distances but it will work equally well in our situation.
First someone will stand 100 feet away from your project. Once your project is launched that person will use the Altimeter to get the tangent angle. Next we multiply the tangent
angle by the distance away from your project to get the height that ball reached.
Height of Ball= Tangent angle x
distance away from project
Each student will design, sketch, and construct their own Energy Launcher using various materials and equipment in the Construction Lab. The Sketches are random ideas of your thoughts but there should be a minimum of 4. From those 4 sketches select 1, draw it in detail using a ruler and straight lines (no freehand drawing). Be sure to include dimensions on your Initial Drawings. When the project is complete you will be required to complete the evaluation form and do a Final Drawing. The Final Drawing compares what your Energy Launcher ended up looking like (again, no freehand drawing, use rulers) to what you drew for your Initial Drawing. Your grade is broken down into 3 parts be sure to see the Evaluation part for further explanation.
Your grade for part 1 depends on how close to your Initial Drawing you constructed your Energy Launcher. The closer it resembles your Initial Drawing, the better your grade will be. The more changes you make or extra pieces you add the lower your grade will be. There are no partners on this project; each student must make their own launcher. Part 2 depends on whether or not the launchers when done are larger than 16” long x 16” wide x 16” tall when it is set or smaller than 12” x 12” x 12”. You will be automatically disqualified and receive a zero if it is larger or smaller in any or all of these dimensions. Part 3 is that the launcher must launch a baseball at least 30 feet in a forward direction and successfully into the cardboard box at the 30-foot mark.
The projects must be latched or have a latching mechanism where the students can have the project on the ground ready to go without them holding it. The students will then be able to set off their projects by triggering their latches. You will not receive credit if you manually pull back your launcher and let it go.You are not limited to wood and the materials I have in the Construction Lab, you can bring in resources from home. Your project might use elastics, or a spring, or make it look like a slingshot. Your energy launcher must have a trigger or device to set it off or your project will get a zero. A hook and latch method is good as well as a dowel rod that you pull out..
On testing day you will be given 3 chances to complete the objective. You will have ample time to do this project and testing and practicing is always allowed. There should be no excuses as to why your project is not completed and in working condition. We will be testing these outside the Blue Doors in the Construction Lab. You must do all work in class unless I give you permission to take it home. Be creative on this project and a nice design and creative effort will only increase your grade. Good luck