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  • Of the sentences given  (i) Internal forces cannot change linear momentum. (ii) Internal forces can change the kinetic energy of a system.<

Of the sentences given 

(i) Internal forces cannot change linear momentum.

(ii) Internal forces can change the kinetic energy of a system.

Option: 1

 (i) Both and (ii) are correct              

          


Option: 2

Only (i) is correct


Option: 3

Both (i) and (ii) are wrong


Option: 4

Both (i) and (ii) are wrong


Answers (1)

best_answer

 

If External Force = 0  then \vec{P}_{total} = constant

Linear momentum of the system is changed by net external force.

But work done by internal forces can change the kinetic energy of the system.

 

 

 

 

 

Posted by

jitender.kumar

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