4 Match the following.
a. Pulling a trolley i. Gravitational
potential energy
b. Child pushing ii. Elastic potential
a fixed wall
energy
iii. Work is done
c. Girl sitting on
the top of a slide
d. Bow and arrow iv. Work is not done
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Answer:
a-iii
pulling a trolley―work is done
b-iv
child pushing a fixed wall―work is not done
c-i
Girl sitting on the top of a slide―Gravitational potential energy
d-ii
Bow and arrow―Elastic potential energy
Explanation:
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