In the figure, a 8.07 g bullet is fired into a 0.960 kg block attached to the end of a 0.786 m nonuniform rod of mass 0.617 kg. The block- rod-bullet system then rotates in the plane of the figure, about a fixed axis at A. The rotational inertia of the rod alone about A is 0.0493 kg.m. Treat the block as a particle. (a) What then is the rotational inertia of the block-rod-bullet system about point A? (b) If the angular speed of the system about A just after impact is 4.61 rad/s, what is the bullet's speed just before impact? Rod Block Bullet (a) Number 0.647 Units kg.m^2 (b) Number 857.8 Units m/s