Energy, Work and Power
Flashcard
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What type of energy describes the movement of volleyball players?
Back
Mechanical energy.
2.
FLASHCARD QUESTION
Front
How do you calculate the kinetic energy of an object?
Back
Kinetic energy (KE) is calculated using the formula KE = 0.5 * mass * velocity^2.
3.
FLASHCARD QUESTION
Front
If a truck has a mass of 1120 kg and is moving at 40 m/s, what is its kinetic energy?
Back
The kinetic energy is 896,000 J.
4.
FLASHCARD QUESTION
Front
What is the total mechanical energy of a system with 12.4 J of potential energy and 23.5 J of kinetic energy?
Back
The total mechanical energy is 35.9 J.
5.
FLASHCARD QUESTION
Front
How do you calculate the potential energy of an object?
Back
Potential energy (PE) is calculated using the formula PE = mass * gravity * height.
6.
FLASHCARD QUESTION
Front
What is the potential energy of a 35 kg chair lifted 5 m off the ground?
Back
The potential energy is 1715 J.
7.
FLASHCARD QUESTION
Front
What is the kinetic energy of a 2 kg ball traveling at 4 m/s?
Back
The kinetic energy is 16 J.
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