A) A skydiver drops from a hot air balloon floating 5000 meters above the ground. The skydiver's parachute now opens instantly, and the effects of air resistance return so that the skydiver floats safely to the ground. From this point, it takes another 7.0 minutes until the skydiver lands. What was the average vertical speed of the skydiver while "under canopy," in m/s?
B) A mass is on a slope at ? = 30? to the horizontal. From rest, it accelerates down the slope at 2.2 m/s2. What is its speed when its vertical height is 1.5 m lower than its starting point, and is there any friction between the mass and the slope?