Unit 4: Energy Review

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•
Physics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Kinetic Energy (KE)?
Back
Kinetic Energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.
2.
FLASHCARD QUESTION
Front
What is Potential Energy (PE)?
Back
Potential Energy is the stored energy of an object due to its position or state, commonly gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.
3.
FLASHCARD QUESTION
Front
At what point during a fall does Kinetic Energy equal Potential Energy?
Back
Kinetic Energy equals Potential Energy halfway down the fall.
4.
FLASHCARD QUESTION
Front
How is work defined in physics?
Back
Work is defined as the energy transferred when a force is applied to an object over a distance, calculated as Work = Force x Distance.
5.
FLASHCARD QUESTION
Front
What is the unit of work in the International System of Units (SI)?
Back
The unit of work is the Joule (J).
6.
FLASHCARD QUESTION
Front
How much work is done when carrying a 30N rock for 10 meters?
Back
300 Joules of work is done.
7.
FLASHCARD QUESTION
Front
What does the Law of Conservation of Energy state?
Back
The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.
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