If an object falls from a height of 44.1 meters above the ground, it is known that it falls 4.9 meters in the first second, and then falls 9.8 meters more than the previous second in each second, how many seconds does it take for the object to land?
一物体自距地面44.1米的高空落下，已知第一秒下落4.9米，以后每一秒都比前一秒多下落9.8米，则该物体共经过多少秒落地．
<result>3</result>