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Class 9 Physics: Work, Energy, and Power Quiz

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Class 9 Physics: Work, Energy, and Power Quiz

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Questions and Answers

What is the formula for work done?

Energy $\div$ power

Velocity $\div$ time

Mass $\times$ acceleration

Force $\times$ distance (correct)

Which of the following is a unit of energy?

Pascal

Watt

Joule (correct)

Newton

What is the relationship between work and energy?

Work is the potential energy of an object

Work is the rate of doing work over time

Energy is the force applied to an object

Energy is the ability to do work (correct)

Which of the following represents the amount of work done on an object?

The product of force and displacement in the direction of the force Signup and view all the answers

What is the relationship between work and kinetic energy?

Work done is converted into kinetic energy Signup and view all the answers

What is the unit of power?

Watt Signup and view all the answers

Study Notes

Work, Energy, and Power

The formula for work done is W = F × d, where W is work, F is force, and d is displacement.
Units of energy include Joules (J) and Kilojoules (kJ).
Work and energy are equivalent, as work done on an object increases its energy.
The amount of work done on an object is represented by the symbol W and is measured in Joules (J).
The relationship between work and kinetic energy is described by the work-energy theorem, which states that the net work done on an object is equal to its change in kinetic energy.
The unit of power is the Watt (W), where 1 Watt is equal to 1 Joule per second (1 W = 1 J/s).

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Description

Test your knowledge of work, energy, and power with this quiz. Explore the formula for work done, units of energy, and the relationship between work and energy.