2. A hot air balloon is rising trerti-rmllirr at 0 Speed of 43m/s. At a height of 640m, a ball is projected horizontally with a Speed of 30m}: When and where will the ball reach the ground? What is the resultant velocity when it reaches the ground? 3. At one instant a pool ball is traveling % m/s[N30E], 35 later it is going 0.3mfs [N45"W]. What was the average acceleration in this interval of ti me