Question

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
O A) Positive
O B) Negative
O c) Zero
OD) Undefined​

Answer 1

Answer:

answer is:

Explanation:

the work done is positive because the force and displacement are in same place . plz mark as brainliest.