A particle moves in a circle of radius 1.0 cm with a speed given by v= 2t, where v is in cm/s and t in seconds.

the radial acceleration of the particle at t=1s is $4\mathrm{cm}/{\mathrm{s}}^2$

the tangential acceleration at t=1s is $2\mathrm{cm}/{\mathrm{s}}^2$

the magnitude of net acceleration at t=1s $13\sqrt{5}\mathrm{cm}/{\mathrm{s}}^2$

the magnitude of net acceleration at t=1s is $2\sqrt{5}\mathrm{cm}/{\mathrm{s}}^2$