All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 01>Q 3

MEDIUM

9th CBSE

IMPORTANT

Earn 100

Define $1 J$ work.

Important Questions on Work and Energy

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 01>Q 4

When is the work done said to be negative?

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 01>Q 5

How much work is done by a coolie to carry load on his head?

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 1

When is an object said to possess energy?

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 2

How will the kinetic energy of an object change If its speed is halved?

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 3

State work- energy theorem.

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 4

Name the type of energy possessed by the water stored in a dam.

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9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 5

Give the formula to calculate the potential energy of an object of mass

m

kept at height

h

.

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 11 - Work and Energy>Check Point 02>Q 6

If an engine supplies $100 J$ of energy to weight of $200 g$ . How high it can be lifted? (given, $g = 9.8 {ms}^{2}$ )