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4 cards from this section. Quick, good the night before a test.
Define energy in your own words.
Think about what you need to move or lift something.
What units are used to measure energy?
Consider what unit is commonly used in physics.
What is the formula for kinetic energy?
Look for the formula that includes mass and speed squared.
True or False: Potential energy is zero when an object is on the ground.
Think about what happens to potential energy when height decreases.
Calculate the mechanical energy for an object with 4 J of kinetic energy and 6 J of potential energy.
Simply add kinetic energy and potential energy together.
If a 3 kg object is lifted to a height of 5 m, calculate its potential energy. Use g = 9.81 m/s².
Plug the values into the potential energy formula and calculate.
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