Work And Energy Class 9 Notes Quiz
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Questions and Answers

What is the formula for work done on an object?

The formula for work done on an object is given by $W = F \cdot s$, where $W$ is the work done, $F$ is the magnitude of the force acting on the body, and $s$ is the displacement in the direction of the force.

What is the SI unit of force?

The SI unit of force is the Newton (N).

What is energy defined as?

Energy is defined as the ability to do work.

What are the different forms of energy mentioned in the text?

<p>The different forms of energy mentioned in the text are light, heat, chemical, electrical, and mechanical.</p> Signup and view all the answers

What is the formula for kinetic energy?

<p>The formula for kinetic energy is given by $KE = \frac{1}{2}mv^2$, where $KE$ is the kinetic energy, $m$ is the mass of the object, and $v$ is the velocity of the object.</p> Signup and view all the answers

Flashcards

Formula for Work

Work is equal to force times displacement in the direction of the force.

SI Unit of Force

The Newton (N).

Definition of Energy

The ability to do work.

Kinetic Energy Formula

KE = 1/2 * m * v^2, where m is mass and v is velocity.

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Forms of Energy

Light, heat, chemical, electrical, and mechanical.

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