[填空题]
A baseball player hits a h7mgg5,zjvwx; tq( . nll0nchx.43 pzfoul ball straigh 7b9 7-hheqgqvt up into the air. It leaves the bat with a speedeh9h77 qqg bv- of $120 \; km/h$. In the absence of air resistance, how fast will the ball be traveling when the catcher catches it? $km/h$ (please only fill in numerical value in the blank)
