Question

See the picture of the park below.
In which of the following cases work is done in park ?
(i) A boy kicks a ball and the ball moves far away.
(ii) His friend runs after the ball and kicks it gently and the ball moves just a short distance.
(iii) A child tries unsuccessfully to lift his mother's heavy bag.
(iv) A child is sliding down on a slide.
(1) only (i) and (ii)
(2) only (ii) and (iii)
(3) only (i), (ii) and (iv)
(4) All (i), (ii), (iii) and (iv)

Answer 1

the answer is 4 all the things are happening.

Answer 2

Answer is third option.
As moving a ball by a distance is a work done.
But the boy lifting the bag is not able to displace the bag and hence work is not done. Sliding down a slide is also a work done as there is a displacement.
And hence the answer would be 3 .
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