[填空题]
A particle revolves in a horizontal circle of radius :fx.a.amjs gk wu+yt w;; zn922.90 m . At a particular x vg/9.pss xw5instant, its w/vs95.s xg pxacceleration 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.
