MECH1Quick check●○○○○new1 Kinematicsr(t)=(t2,3t,1−t3)\mathbf{r}(t) = (t^2, 3t, 1 - t^3)r(t)=(t2,3t,1−t3). Find v\mathbf{v}v, a\mathbf{a}a and the speed at t=1t = 1t=1.