Work, Power, and Energy Review

Flashcard
•
Physics
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Work in physics?
Back
Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force. It is calculated using the formula: Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.
2.
FLASHCARD QUESTION
Front
What is Power in physics?
Back
Power is the rate at which work is done or energy is transferred over time. It is calculated using the formula: Power (P) = Work (W) / Time (t). The unit of power is the Watt (W), where 1 Watt = 1 Joule/second.
3.
FLASHCARD QUESTION
Front
What is Energy in physics?
Back
Energy is the capacity to do work. It exists in various forms, including kinetic energy, potential energy, thermal energy, etc. The unit of energy is the Joule (J).
4.
FLASHCARD QUESTION
Front
What is Kinetic Energy?
Back
Kinetic Energy is the energy possessed by an object due to its motion. It is calculated using the formula: KE = 1/2 mv², where m is the mass of the object and v is its velocity.
5.
FLASHCARD QUESTION
Front
What is Potential Energy?
Back
Potential Energy is the energy stored in an object due to its position or configuration. The most common form is gravitational potential energy, calculated using the formula: PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.
6.
FLASHCARD QUESTION
Front
What is Gravitational Potential Energy?
Back
Gravitational Potential Energy is the energy an object possesses because of its height above the ground. It is calculated using the formula: PE = mgh.
7.
FLASHCARD QUESTION
Front
What is the Work-Energy Principle?
Back
The Work-Energy Principle states that the work done on an object is equal to the change in its kinetic energy. This principle can be expressed as W = ΔKE.
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