33. At a hockey game, small foam hockey pucks are launched at a height of 2 m above the ice level by using a special sling shot. How long is a puck in the air if a student in the stands catches it on its way down 12 m above the ice level? The model for the vertical motion of the puck can be approximated by the relation h =-51" + 15#+ 2, where # is the time in seconds, and / is the height in metres. (4 marks)