At any instant the velocity of a particle of mass 500 g is \(\left(2 t \hat{i}+3 t^2 \hat{j}\right) \mathrm{ms}^{-1}\) . If the force acting on the particle at \(t=1 \mathrm{~s} \text { is }(\hat{i}+x \hat{j}) \mathrm{N}\) . Then the value of x will be:
1
2
2
6
3
3
4
4