A balloon filled with 3.50 kg of water at a temperature of 22°C is dropped from rest from an airplane. The airplane is 8000 m above the ground. There is air resistance acting on the balloon, and just before hitting the ground, the balloon is traveling at a speed of 200 m/s. For this problem, you can ignore the balloon material (its mass, specific heat etc...) and just treat the balloon as 3.50 kg of pure water. Also, assume g is a constant 9.8 m/s2 during the entire fall and that the system of the water + surrounding air is a closed system. Assume that all internal energy change occurs in the water. Find the temperature of the water in the balloon just before hitting the ground. Show your work! ( c m, water = 4186 J/kgK)

A balloon filled with 3.50 kg of water at a temperature of 22°C is dropped from rest from an airplane. The airplane is 8000 m above the ground. There is air resistance acting on the balloon, and just before hitting the ground, the balloon is traveling at a speed of 200 m/s. For this problem, you can ignore the balloon material (its mass, specific heat etc...) and just treat the balloon as 3.50 kg of pure water. Also, assume g is a constant 9.8 m/s2 during the entire fall and that the system of the water + surrounding air is a closed system. Assume that all internal energy change occurs in the water. Find the temperature of the water in the balloon just before hitting the ground. Show your work! ( c m, water = 4186 J/kgK)