Work, Energy and PowerWorkEnergy Theorem (KVPY StreamSA (Class 11) Physics): Questions 1  3 of 3
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Question number: 1
» Work, Energy and Power » WorkEnergy Theorem
Appeared in Year: 2011
Question
A body of 0.5 kg moves along the positive xaxis under the influence of a varying force F (in Newton) as shown below.
If the speed of the object at x = 4 m in 3.16 ms ^{–1} then its speed at x = 8m is,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 2
» Work, Energy and Power » WorkEnergy Theorem
Question
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:
Where, x is in meter and t is sec. The work done by the force in first 4 sec is –
Choices
Choice (4)  Response  

a.  6 J  
b.  4 J  
c.  8 J  
d.  0 
Question number: 3
» Work, Energy and Power » WorkEnergy Theorem
Question
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:
Where, x is in meter and t is sec. The work done by the force in first 7 sec is –
Choices
Choice (4)  Response  

a.  4 J  
b.  2 J  
c.  6 J  
d.  0 J 