Question

12. A body of mass 6 kg under a force which causes
displacement in it given 'S =t^2/2
metres where t
is time. The work done by the force in 2 seconds
is :-
(1) 12J
(2) 9J
(3) 6J
(4) 3J

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Answer 1

W=F.S

F=ma

I had solved it...hope it helps