Work / Energy

Flashcard
•
Science
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is work in physics?
Back
Work is done when a force is applied to an object and the object moves in the direction of the force.
2.
FLASHCARD QUESTION
Front
Is work done when carrying an object at a constant height?
Back
No, because the force (upward) is perpendicular to the direction of motion (horizontal).
3.
FLASHCARD QUESTION
Front
What is the formula for calculating work?
Back
Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.
4.
FLASHCARD QUESTION
Front
What is kinetic energy?
Back
Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.
5.
FLASHCARD QUESTION
Front
What is potential energy?
Back
Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy.
6.
FLASHCARD QUESTION
Front
What happens to potential energy as an object falls?
Back
The potential energy decreases as it is converted into kinetic energy.
7.
FLASHCARD QUESTION
Front
What is elastic energy?
Back
Elastic energy is the potential energy stored in an object when it is compressed or stretched, such as in a spring.
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