Introduction to Work, Energy, and Power in Physics

What does 'work' specifically mean in physics?

• Studying for exams

• Daily job tasks

• Force applied over a distance

• Completing assignments

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What unit is commonly used to express work in physics?

• Watt

• Joule

• Pascal

• Newton

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What is the significance of Joules in physics?

• It measures velocity

• It measures work and energy

• It measures power

• It measures force

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What is kinetic energy?

• Energy stored in a spring

• Energy stored in an object at rest

• Energy due to an object's motion

• Energy lost due to friction

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What is potential energy?

• Energy due to position or condition

• Energy in motion

• Energy lost in friction

• Energy stored in batteries

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What is the relationship between work and energy?

• Work generates electricity

• Work is a form of potential energy

• Work is the change in energy due to an external force

• Work and energy are unrelated

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How is gravitational potential energy calculated?

• Mass times velocity squared

• Force times distance

• Half times mass times velocity squared

• Mass times gravity times height

What happens to the kinetic and potential energy in a conservative system?

• They convert into each other, keeping the total energy constant

• They decrease over time

• They increase over time

• They remain constant

What is the formula for calculating average power?

• Work over distance

• Work over time

• Force times velocity

• Mass times acceleration

How does the concept of power relate to work and energy?

• Power is the distance covered per unit of energy

• Power measures the rate of doing work

• Power is the ability to exert forces

• Power is a type of potential energy