[填空题]
The blades in a blender rotate at a rate of 6500 rpm. When thccy.0:hz w7u pe i cd .3r* 6agkkt*4tsdtbf8d8motor is turned off during operation, the blades slow to rest in 3.0 s. What is the angudt ak8 cd.f btt3d*i6*srk4g8 lar acceleration as the blades slow down? $rad/s^2$
