[填空题]
A baseball player hits ahv -s):m4s: 7lyg jk7jq2hp p9svp*fz foul ball straight up into the air. It leaves the bat n9 ffqs 4zya vp- d:h7*90mwvzwith a speed of0-p s4yzf:mfvdq9 v7anh wz9* $120 \; km/h$. 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)
