What is the unit for energy and work?
AP Physics - Energy Conservation

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Physics
•
10th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
J (Joules)
2.
FLASHCARD QUESTION
Front
What is the ability to do work called?
Back
Energy
3.
FLASHCARD QUESTION
Front
How are work and energy related?
Back
The work done by an external force acting on an object causes a change in the mechanical energy of the object.
4.
FLASHCARD QUESTION
Front
What is the formula for gravitational potential energy?
Back
PE = m * g * h
5.
FLASHCARD QUESTION
Front
What is the formula for kinetic energy?
Back
KE = 1/2 * m * v^2
6.
FLASHCARD QUESTION
Front
If a ball has 17 J of kinetic energy and its mechanical energy is 25 J, what is its potential energy?
Back
8 J (Mechanical Energy = Kinetic Energy + Potential Energy)
7.
FLASHCARD QUESTION
Front
If the mass of a car is 600 kg and the change in potential energy is 294,000 J, what is the height change?
Back
h = PE / (m * g) = 294,000 J / (600 kg * 9.81 m/s²) ≈ 49.8 m
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