Solve Impulse and Depth Homework Challenge

In summary, the conversation discusses a physics problem involving a paratrooper who fell from an airplane and landed in snow. The goal is to find the minimum depth of snow that would have stopped him safely and the magnitude of the impulse on him from the snow. The contributors discuss the equation F=ma and using it to find acceleration, as well as the equation vi^2-vf^2=2*a*s to find the stopping distance. They also mention confusion about the formula for impulse and ask for help from a user named Dick.
  • #36
Bye.
 
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  • #37
okay so for time i got = 2.38s is that right>?
 
  • #38
Dick said:
Apologies. I'm not used to getting hammered by two people at the same time. I get confused. You seem to be asking the same questions and I thought you might be working on the same problem. This is a really good reason not the break into somebody else's thread with your own problem.

well yes.. but it wasn't really a problem it was just something i needed reassurance. and today is my first day here.. I'm learning. my apologies
 
  • #39
but i don't know the force so how can i find impulse.
 
  • #40
im not sure, but that doesn't look right.. what did u do?
 
  • #41
force is given
 
  • #42
i did V= Vinitial + at and for V initial i used 58
ooooooo wait i accidentaly squared 58...
so now for t I am getting = .04108s
 
  • #43
there is an easier way to do this.. impulse= f(delta T), but it is also = mV1-mV2
 
  • #44
so is the impulse = 4930.002?
 
  • #45
or do i multiply 4930 by 1.2 E 5?
 
  • #46
ya its 4930
 
  • #47
1.2 times 10 to the 5th power
 
  • #48
how did u get that?
 
  • #49
Omg
Thank You!
You Are The BEST!
!
!
!
!
 
Last edited:
  • #50
Nvm What I Said In Post 64.
 
  • #51
THANK YOU AGAIN SO MUCH FOR HELPING ME. I MIGHT TO physics c next year. but i don't know yet. anways THANKS
 
  • #52
lol ok np, btw what grade are u in? I am a senior
 
  • #53
Im A Junior
 
  • #54
Thanks.
 
  • #55
yup, u should also try to help out ppl... when u think u know how to do it
 
  • #56
YAH OF COURSE I WILL.
thanks again.
it was really nice of you to stay up soo late and help me
 
  • #57
physicsbhelp I really think you go to my school because I have this same exact problem and I am also a junior in Physics B.
 
  • #58
wow that's hilarious
 
  • #59
that does not matter, and i go to a very big college--not a school (do you mean high school??) so there is no chance i know you because you have asked me before where i live, and i do not live in that state. now leave me alone, please.
 

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