Question

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

Answer 1

Answer:

3j

Explanation:

s=t^2/4

=2×2/4

=1m. v= ds/dt

=d(t^2/4)/ dt

=2t/4

= t/2

a=dv/dt

=d(t/2)/dt

=1/2. W=F.S

=(ma).s

=6×1/2×1

=3J

hope it helps you if yes then plz mark as brainlist plz