Question

12. A man is carrying the heavy luggage from one platform to the other of a Railway station but still
according to the logics of science his work done is said to be zero. Can you opt out the correct
reason?
(a) The force is acting along the direction of displacement of luggage
(b) The force is acting perpendicular to the direction of displacement of luggage
(c) The force is acting opposite to the direction of displacement of luggage
(d) None of these
13. When a body falls freely towards the earth, then its total energy
(a) Decreases
(b) Increases
(c) First increases and then decreases
(d) Remains constant​

Answer 1

Answer:

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Answer 2

Answer:

b

first increase and then the decrease