[填空题]
A bowling ball travelin x svuexs(d a8*x0mx:3+uso c7g with constant speed l8a.tzbejs17xw( plo+bd uxk pl2,+2 hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.50 s after the ball is released from his hands. What is the s8p12(d s2ot++zklxlxjbb., e ua7lw ppeed of the ball? The speed of sound is 340 m/s. m/s