Question

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​

Answer 1

Answer:

d. climbing stairs of a bridge

Answer 2

(d) The person in all the three cases are at rest but only the person walking is in motion.