While riding in a hot air balloon, which is steadily descending at a speed of 2.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed (in m/s) of the cell phone? m/s V= (b) How far (in m) is the cell phone below the balloon after this time? d= m (c) What are your answers to parts (a) and (b) if the balloon is rising steadily at 2.39 m/s? V = m/s d = m