[填空题]
A film of Jesse Owens’s f6 a2r f ,mt*w.1qtb qt-pok4ffamous long jump (Fig. 6–42) in th8tc;d ofi - x3;wizllqdc)9 x/e 1936 Olympics shows that his center of mass rose 1.1 m from launch point to the top of the arc. What minimum speed did he need at launci;8) /fdxl;qot9dwz3liccx -h if he was traveling at 6.5m/s at the top of the arc? m/s