Science, asked by narasimhaiahmsp, 4 months ago

9. A porter with a suitcase on his head is climbing up a flight of
stairs with a uniform speed, the work done by the 'weight of the
suitcase' on the suitcase is
A) Positive
B) Negative
C) Zero
D) Undefined​

Answers

Answered by gajendrabkpatel5094
1

Answer:

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