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9th CBSE
IMPORTANT
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A body is dropped from certain height to the ground. When it reaches halfway down, it possesses, 

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Important Questions on Competition Corner-1

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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
The energy required to raise a given volume of water from a well can be 
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
If a force F is applied on a body and it moves with velocity v, then the power will be  
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
Which of the following graphs closely represent the P.E. U of a freely falling body and its height h above the ground? 
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
The displacement x of a particle moving in one dimension, under the action of a constant force, is related to time t by the equation, t=x+3 where x is in metres and t is in seconds. The displacement of the particle when its velocity is zero, is
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
Asha lifts a doll and places it on the table. If the weight of the doll is known, what else do we need to know in order to calculate the work Asha had done on the doll?
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
The work done in lifting a mass of 1 kg to a height of 9.8 m is 
MEDIUM
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
In which of the following cases, will the work done be maximum? The body is moved through a distance s on the ground.
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9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 16 - Competition Corner-1>Exercise: Work and Energy
Work done by a centripetal force