Types of Energy and Work

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What is the SI unit of work?

Newton (N)

Joule (J) (correct)

Watt (W)

Second (s)

Which type of energy is associated with moving objects?

Potential energy

Mechanical energy (correct)

Electrical energy

Chemical energy

What is the mathematical expression for kinetic energy?

$\frac{m}{s} \times v^2$

$\frac{m}{2} \times v^2$ (correct)

$m \times v^2$

$\frac{m}{2s} \times v^2$

What is the law of conservation of energy?

Energy can neither be created nor destroyed, it can only change forms Signup and view all the answers

What is the rate of doing work known as?

Power Signup and view all the answers

What is the unit of power in the SI unit system?

$Watt (W)$ Signup and view all the answers

What is the mathematical expression for work?

Work = Force × Displacement Signup and view all the answers

Why is work considered a scalar quantity?

Because force and displacement are both scalar quantities Signup and view all the answers

In which unit is work measured?

Joule (J) Signup and view all the answers

Under what condition does the force cause work?

When the object moves in the direction of the force Signup and view all the answers

What type of work occurs when a body falls under gravity?

Positive work Signup and view all the answers

What is energy defined as?

The ability to do work Signup and view all the answers

What is the mathematical expression for work?

$W = F \times s$ Signup and view all the answers

Why is work considered a scalar quantity?

Because work does not depend on the direction of the force Signup and view all the answers

What is the SI unit of work?

Joule Signup and view all the answers

In which kind of work does the displacement occur in the direction of the force?

Positive work Signup and view all the answers

What kind of work occurs if the displacement is opposite to the direction of the force?

Negative work Signup and view all the answers

When does zero work occur?

When there is no displacement but force is applied Signup and view all the answers

Types of Energy and Work

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Questions and Answers

What is the SI unit of work?

Which type of energy is associated with moving objects?

What is the mathematical expression for kinetic energy?

What is the law of conservation of energy?

What is the rate of doing work known as?

What is the unit of power in the SI unit system?

What is the mathematical expression for work?

Why is work considered a scalar quantity?

In which unit is work measured?

Under what condition does the force cause work?

What type of work occurs when a body falls under gravity?

What is energy defined as?

What is the mathematical expression for work?

Why is work considered a scalar quantity?

What is the SI unit of work?

In which kind of work does the displacement occur in the direction of the force?

What kind of work occurs if the displacement is opposite to the direction of the force?

When does zero work occur?

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