[单选题]
An object is launched horizontally from a height in a jh iepiw) .;l+0i4mx gvacuum. Which (-if.hlfsv kyr/har9ap +.jfk0 5r, l of the following graphs correctly /.fr+-kh0 j5l.9k(fi pfry haar,sv lshows how the square of the velocity $v^2$ of the object varies with the square of time $t^2$?
