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

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

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Grade:7

1 Answers

Ritesh Yadav
26 Points
5 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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