Science: Class IX>Chapter 11 - Work and Energy>Questions

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EASY

9th Jharkhand Board

IMPORTANT

Science: Class IX>Chapter 11 - Work and Energy>Questions>Q 1

What is the kinetic energy of an object?

EASY

9th Jharkhand Board

IMPORTANT

Science: Class IX>Chapter 11 - Work and Energy>Questions>Q 2

Write an expression for the kinetic energy of an object.

MEDIUM

9th Jharkhand Board

IMPORTANT

Science: Class IX>Chapter 11 - Work and Energy>Questions>Q 3

The kinetic energy of an object of mass, $m$ moving with a velocity of $5 {ms}^{- 1}$ is $25 J$ . What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?