[填空题]
A 25-g bullet strikes and becomes embedded in a 1.3e3naxxm.x56 e-mi 1hb5 lnax i98s uz55-kg block of wood plaig. fn2 0d5v8pc ub+jm*pii-hced on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is2ib5pd hv i-cj* m0 inufp.+8g 0.25, and the impact drives the block a distance of 9.5 m before it comes to rest, what was the muzzle speed of the bullet? m/s
