[填空题]
A particle revolves in a horizozan ,o6mr kk*mep;r :1ntux*mp ekb +2n1al circle of radius 2.90 m . At a particular instantnpum2e1 * x+bk, its acceleration is 1.05 $\mathrm{~m} / \mathrm{s}^{2}$ , in a direction that makes an angle of 32.0$^{\circ}$ to its direction of motion. Determine its speed (a) at this moment
(b) 2.00 s later, assuming constant tangential acceleration.
