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Work done is said to be negative, when a force causes displacement

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Important Questions on Work and Energy

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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 5
In which case work is not done?
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 6
In which case work is done?
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 7
A stone is a tied to a string and whirled in a circular path. The work done by stone is
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 8
A man carries a suitcase in his hand climbs up the stairs. The work done by the man is
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 9
A rocket rises up in the air due to the force generated by the fuel. The work done by the
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 10
An object is thrown up at angle Q, from point A, reaches to the point B after rising through the height h as shown in diagram. The work done by the force of gravity is

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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 11
The SI unit of work is
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9th CBSE
IMPORTANT
Core Science Physics For Class 9>Chapter 4 - Work and Energy>EXERCISE>Q 12
One joule work is said to be done when a force of one newton acts through a distance of