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Four situations I. A boy throws a ball...

Four situations
I. A boy throws a ball up in the air and it falls freely on the ground.
II. A horse pulls a cart and the cart moves forward.
III. A can is opened with the help of an opener.
IV. A magnet is demagnetized by hammering it.
In which of the given situations is indirect application of force involved?

A

I

B

II

C

III

D

IV

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