Which of these is an example of scientific work done?
(a)Standing with a load of 2kg on the head for 5 minutes
(b)Playing video games when sitting on a sofa
(c) Sitting on a chair and reading a book
(d) Climbing stairs of a bridge
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Answer:
d. climbing stairs of a bridge
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(d) The person in all the three cases are at rest but only the person walking is in motion.
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