Kinetic energy problems

Flashcard
•
Science, Physics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is kinetic energy?
Back
Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.
2.
FLASHCARD QUESTION
Front
How do you calculate kinetic energy?
Back
Kinetic energy (KE) is calculated using the formula: KE = 1/2 mv², where m is the mass of the object and v is its velocity.
3.
FLASHCARD QUESTION
Front
What happens to kinetic energy if the speed of an object doubles?
Back
If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the velocity.
4.
FLASHCARD QUESTION
Front
What is the unit of kinetic energy?
Back
The unit of kinetic energy is the Joule (J).
5.
FLASHCARD QUESTION
Front
If a 2 kg object is moving at 5 m/s, what is its kinetic energy?
Back
KE = 1/2 * 2 kg * (5 m/s)² = 25 J.
6.
FLASHCARD QUESTION
Front
What is the relationship between mass and kinetic energy?
Back
Kinetic energy is directly proportional to the mass of the object; as mass increases, kinetic energy increases if velocity remains constant.
7.
FLASHCARD QUESTION
Front
What is the relationship between velocity and kinetic energy?
Back
Kinetic energy is proportional to the square of the velocity; as velocity increases, kinetic energy increases exponentially.
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