Questiоn 5 (10 Pоints) A hоt аir bаlloon is аscending straight up from the ground with an initial velocity of 5 m/s and an acceleration of 0.75 m/s2. When the balloon is 15 meters above the ground, a gun fires a pellet straight up from ground level with an initial speed of 30 m/s. Along the path of the balloon, there are two places where each of them has the same altitude at the same time. How far above the ground are these places?