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Pls tell this question is from wokr energy ......................................

Kushal Chaudhari , 6 Years ago
Grade 7
anser 1 Answers
Ritesh Yadav

Last Activity: 6 Years ago

W.D by friction= \Delta K+\Delta U
\Delta U= (-mgh) as it is going downward
-5=K.E.+ (-mgh)
-5=K.E.+(-10)
K.E=5joules
So kinetic energy at point B is 5 joules
 

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