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Education
®
For printer friendly versions of the experiments, go to: www.knex.com/instructions and enter the code 79320.
7
Objectives: Design and modify a
vehicle for a specific purpose. Correctly
identify and describe the difference
between potential and kinetic energy in
a racer/ramp system.
Materials You Will Need:
79320
K’NEX parts and materials included in the STEM
Explorations: Vehicles Set. NOTE: DO NOT use
rubber bands or motors for this experiment
2 pieces of cardboard, plywood or hardboard that
can be used as ramps
books or boxes to use as ramp supports
measuring tape
masking tape
paper or notebook
PROCESS:
1. Build a 4-wheeled vehicle model of your own design.
Alternatively, you could build the short rubber band
racer (without the rubber band) model from the
included step-by-step building instructions.
2. Exploring Potential and Kinetic Energy:
a. Set up two ramps, one with a height of 10
centimeters and one with a height of 60
centimeters.
b. Release your built vehicle from the top of the
shorter ramp. Why did it roll down the ramp?
c. Now release your built vehicle from the top of the
taller ramp. Did you notice any difference in the
performance of the vehicle? What do you think
caused that difference? Can you describe the
difference in terms of energy in your notebook?
d. There are two terms we can use to describe
the different types of energy in the racer/ramp
system.
Experiment #1
Designing Vehicles
(
EN
)
English
7


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