5130800-57150 The Skate Basic Park - Intro to Energy Potential and Kinetic PhET Lab
Introduction:
When Tony Hawk wants to launch himself as high as possible off the half-pipe, how does he achieve this? The skate park is an excellent example of the conservation of energy . The law of conservation of energy tells us that we can never create or destroy energy, but we can change its form. In this lab, we will look at the conversion of energy between gravitational- potential energy, work, and kinetic (or moving) energy.

Use the internet, your textbook, or notes to define the following key terms:
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Kinetic Energy _________________________________________________________ ________ _______
Potential Energy _______________________________________________________________________
Mechanical Energy ____________________________________________________________________
Joule ________________________________________________________________________________

State, in your own words , the Law of the Conversation of Energy .



Procedure: PheT Simulations Play With Sims Physics Energy Skate Park : Basics

Take some time and play with the skater. Turn on the Bar Graph, Pie Chart, and Speed options.

How does increasing skater's m ass change the skater's… .
Kinetic Energy? ___ ___________ _ _____Potential Energy? ______ _ _____________Total Energy? ______ _ _____ _ ________

How does the skater's kinetic energy change as he moves down the ramp? _______________________ __________________

How does the skater's kinetic energy change as he moves up the ramp? ______________________________ ___ __________

How does the skater's potential energy change as he moves down the ramp? _____________________________ ___ _______

How does the skater's potential energy change as he moves up the ramp? ____________________________ ___ ___________

How does the skater's total energy change as he moves down the ramp? _____________________________ ___ ___________

How does the skater's total energy change as he moves up the ramp? _______________________________ ___ ___________

570738031115 Describe the skater's kinetic energy at the bottom of the ramp. __________________________ __ _________

Describe the skater's potential energy at the bottom of the ramp. __________________________ __ _______

What happens when the skater is dropped onto the ramp from above the ramp? ______________________________________

Observe the following situations. Draw the possible bar graphs for the situation shown. Compare your results with a nearby lab group, AFTER you have completed this section.

Top of the ramp, stopped for just an instance.

87630051435000 Bottom of the ramp, zooming past the middle.

52641566738500 Mid-way down the ramp, moving about mid-speed.

72961596964500 3/4 of the way down the ramp, moving pretty fast.

Draw where the skater might be based on the bar graphs shown. Compare your results with a nearby lab group, AFTER you have completed this section.








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A00
A -7239075565
← Consider this zany track. What point or points on this track would the skater have ...
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E00
E -117157599695
D00
D The most kinetic energy? The most potential energy?
-183070514605
B00
B The same kinetic energy (two points) and
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C00
C


Conclusion Questions: ( circle the correct answers )
At the highest point kinetic energy is zero / maximum while the potential energy is zero / maximum .
At the lowest point kinetic energy is zero / maximum while potential energy is zero / maximum .
Mass affects / does not affect the amount of energy.
As an object falls in gravity, kinetic energy increases / decreases / remains the same .
As an object falls in gravity, potential energy increases / decreases / remains the same .
As an object falls in gravity, total energy increases / decreases / remains the same .
An object travelling faster and faster has a kinetic energy that increases / decreases / remains the same .
An object travelling faster and faster has a potential energy that increases / decreases / remains the same .
As an object speeds up, the total energy increases / decreases / remains the same.
As an object slows down, the total energy increases / decreases / remains the same.
49364904064000 The Skate Park - Intro to Energy and Work PhET Lab
Introduction:
In this lab, we will look at the conversion of energy between gravitational-potential energy, work, and kinetic (or moving) energy. This conversion is work . (Realize though, that in real life, skateboard wheels have friction. In our experiments, we ignore friction) Energy is measured in units of J oules.

Important Formulas:
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