Energy Review
Flashcard
•
9th Grade
•
Practice Problem
•
Hard
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40 questions
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1.
FLASHCARD QUESTION
Front
What is the Law of Conservation of Energy?
Back
Energy cannot be created or destroyed.
Answer explanation
The Law of Conservation of Energy states that energy cannot be created or destroyed.
2.
FLASHCARD QUESTION
Front
What is the formula for work?
Back
Work = Distance x Force
Answer explanation
The formula for work is Work = Distance x Force. This formula calculates the amount of work done by multiplying the distance and the force applied.
3.
FLASHCARD QUESTION
Front
The SI unit for work that is equal to one Newton-meter is __________________.
Back
Joule
Answer explanation
The SI unit for work that is equal to one Newton-meter is Joule. Joule is the correct choice because it represents the amount of work done when a force of one Newton is applied over a distance of one meter.
4.
FLASHCARD QUESTION
Front
If you walk for one mile, and later you walk for two miles, how much work did you do in the 2 mile walk compared to the one mile walk?
Back
You did twice as much work because you walked twice as far.
Answer explanation
The work done is directly proportional to the distance covered. Since you walked twice as far, you did twice as much work.
5.
FLASHCARD QUESTION
Front
How many Joules of work are done if you carry a 30N rock for 10 meters?
Back
300 Joules
Answer explanation
To calculate the work done, multiply the force (30N) by the distance (10m). The correct choice, 300 Joules, is obtained by multiplying 30N by 10m.
6.
FLASHCARD QUESTION
Front
What is the unit for Kinetic Energy?
Back
Joules
Answer explanation
The unit for Kinetic Energy is Joules, which is a measure of energy. It is the correct choice because it is the standard unit used to quantify kinetic energy.
7.
FLASHCARD QUESTION
Front
What is the unit for Potential Energy?
Back
Joules
Answer explanation
The unit for Potential Energy is Joules. Joules is the correct choice because it is the standard unit for measuring energy.
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