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4 cards from this section. Quick, good the night before a test.
What does the Law of Conservation of Energy state?
Remember the key idea that energy is constant.
Give one example of potential energy.
Think about height and position.
What is the main idea of the Law of Conservation of Energy?
Focus on energy changes.
True or False: In a closed system, energy can freely enter or leave.
Consider the definition of a closed system.
A car travels at a speed of 30 m/s and has a mass of 1,500 kg. Calculate its kinetic energy and discuss how this energy changes when it hits a hill and comes to a stop.
Use the kinetic energy formula for calculations.
An ideal closed system runs a chemical reaction that releases 200 J of energy, which is absorbed by a surrounding system. What does this imply about energy conservation in the original system?
Think about how energy shifts during reactions.
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