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Subject :NSO    Class : Class 3

Which of these works on mechanical energy?

(A)

(B)

(C)

(D)
how is option a correct

Ans 1:

Class : Class 4
A. Boat

Ans 2:

Class : Class 5
toooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo easy

Ans 3:

Class : Class 5
Reallllly Easy

Ans 4:

Class : Class 3
A

Ans 5:

Class : Class 3
was a 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 times easy

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