# Homework Help: Ski diver falling in snow

1. Nov 4, 2006

### Sportsman4920

An airplane pilot fell 360 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.1 m deep, but survived with only minor injuries. Assuming the pilot's mass was 84 kg and his terminal velocity was 50 m/s, estimate the following.
(a) the work done by the snow in bringing him to the rest
J
(b) the average force exerted on him by the snow to stop him
N
(c) the work done on him by the air resistance as he fell
J

2. Nov 4, 2006

### Office_Shredder

Staff Emeritus
You need to show some work if you want help. I'll kick it off for you though..... for solving part (c), what would his kinetic energy been without air resistance?

3. Nov 4, 2006

### Sportsman4920

W=(84*9.8)-1/2(50)squared*1.1

does the force exerted by the snow to bring him to rest have to be more than or equal to the force he exerts on the snow?

4. Nov 5, 2006

### verty

Sportsman, was that your answer to Office_Shredder's question? I hope you don't answer your questions like that in tests and exams, it's not well presented. Please give it a proper go so we can see that you are putting effort in.