Question: A time dependent force $\mathrm{F}=6 \mathrm{t}$ acts on a particle of mass $1 \mathrm{~kg}$. If the particle starts from rest, the work done by the force during the first $1 \mathrm{sec}$. will be :
$9 \mathrm{~J}$
$18 \mathrm{~J}$
$4.5 \mathrm{~J}$
$22 \mathrm{~J}$
Correct Option: , 3
Solution:
