The position vector r of a particle of mass m is given by the following equation $r\left(t\right)=\alpha t^3\widehat{i}+\beta t^2\widehat{j}$, where $\alpha =\frac{10}{3}m{s}^{-3},\beta =5m{s}^{-2}$  and $m=0.1kg$  . At $t=1s$ , which of the following statement(s) is/are true about the particle?

The velocity v is given by  $(10i+10j)m/\sec$

The angular momentum  L with respect to the origin given by  $L=-\left(\frac{5}{3}\right)\widehat{k}Nms$

The force F is given by  $F=(\widehat{i}+2\widehat{j})N$

The torque $\tau$  with respect to the origin is given by  $\tau =-\left(\frac{20}{3}\right)\widehat{k}Nm$