a kangaroo jumps up with an initial velocity of 36 feet per second from the ground (assume its stating height is 0 feet). Use the vertical motion model, h= -16t+ vt+ s , where v is the inicial velocity in feet per second and s is the height in feet, to calculate the amount of time the kangaroo is in the air before it hits the ground again. Round you answer to the nearest tenth if necessary. Time in air:___ seconds