The recommended dose and schedule of nivolumab in adjuvant melanoma is 240 mg administered as an IV infusion over 60 minutes every two weeks until disease recurrence or unacceptable toxicity, for a maximum of 1 year.
The velocity of a skydiver is largely governed by weight and drag. Obviously both can vary quite a bit. The typical skydiver flying in belly or prone position reaches the terminal velocity of about 110mph to 150mph (typically 130mph) after about 1000ft of freefall.
The chance of surviving a fall into water depends a lot on the position in which you hit the water. People have survived vertical falls of 200 feet or so but they generally have entered the water feet first. From 200 feet your body would accelerate to about 60 to 70 miles per hour.