[填空题]
A particle revolves ieavorur-/8l 8 n a horizontal circle of radius e,w00syk59 hs6ya)tb4khk u kn7oao v; t,p0g2.90 m . At a particular insg0nvkpet0k yo5oba0)4 9a s k,, w6;shkhy7u ttant, 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.
