What is force?
What will happen to the object if it is already moving?
What can force do to the shape of an object?
Why is force called a "prime mover?"
What causes water to move?
What causes heat to move?
What causes electric charge to move?
How is a car a good example of the four systems working together?
How does Leonard find out what is wrong with the car?
How do technicians solve complicated problems?
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