# Help-santa claus problem

1. Dec 14, 2003

### bard

Chubby Santa(mass 100kg) decides to have some fun and slides 9.0 m down a snowy roof)starting from rest. There is a 135 n fricitional force between santa and the roof. After sliding the 9.0 meters he collides with and clings to, an elf (mass 50kg) who was sitting on the roof edge. They both fall into the snow-6 meters below

B)Use work-energy principles and conservation of momentum when applicable to evaluate how fast they are moving when they hit the snow.

c)During the collision santa and the elf each exert a forces on each other. WHich, if either, exerts the larger force? explain

any help would be appreciated

image is here
http://www.collegeconfidential.com/cgi-bin/discus/board-profile.cgi?action=display_picture&picture=bard-colleges&timenow=1071372956 [Broken]

Last edited by a moderator: May 1, 2017
2. Dec 14, 2003

### HallsofIvy

For part c) "For every action there is an equal and opposite reaction". Whatever force Santa exerts on the elf, the elf necessarily exerts on Santa.

3. Dec 14, 2003

### bard

ok i understand. What i dont understand is how to write a "physics story". I guess that i have to describe whats going on in the problem?

4. Dec 15, 2003

### HallsofIvy

I'm afraid you'll have to ask your teacher what he/she means by a "physics story"!

5. Dec 15, 2003

### No Name Required

Be careful of what you classify as 'your work' Bard.