Cramster.com - Homework Solutions, Lecture Notes, Exams, and Free Online Homework Help
Sign Up Now! Login Customer Support
McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Problem Solved.
    Home    
    Homework Help    
   Answer Board   
    Resources (Beta)    
   
You Are Here: Home > Answer Board > Physics > Topic: Collision and Impulse
Member's Topic Headline:

Collision and Impulse

Know the answer? Have a better solution? Share it.
Get Help Now.
View homework problems
explained for free!
Member Testimonials

Question:

Advertisement:
Answer | Ask New Question | Customize Profile | Leaderboards | 
FAQ

Member's Avatar
Scholar
Karma Points: 200
Respect (93%):
Date Posted: 7/24/2008 3:56:50 PM  Status: Closed
Collision and Impulse
Course Textbook Chapter Problem
Calculus Based Physics Fundamentals of Physics Extended (8th) by Resnick, Halliday, Walker N/A N/A
Question Details:
Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 11 m into 28 cm. of water. Assuming that he stops just as he reaches the bottom of the water and estimating his mass to be 72 kg, find the magnitudes of the impulse on him from the water.
Bonus Point Alert! Earn +4 additional karma points for helping this annual member.

Answers:

Member's Avatar
Oracle
Karma Points: 8,225
Date Posted: 7/24/2008 4:06:06 PM  Status: Live
Asker's Rating: Lifesaver   
Response:
Velocity After 11 m Fall = v =  √(2*g*H)  =
         



Impulse= (Change In Momentum)  =  m*Δv  =
             =  (72)*(14.69 - 0) 
             = 1057.68 N*s

    
Hope this helps. Don't forget to rate the answer.

Member's Avatar
Novice
Karma Points: 30
Date Posted: 7/24/2008 4:13:42 PM  Status: Live
Asker's Rating: N/A   
Response:
Use kinematics equation to find Henri's velocity in the y direction as follows:




Next, use the impulse function below plugging in the velocity previously found you obtain:
CP3's Comment:
question was closed sorry



By reading or posting messages on these forums, you are agreeing to the Answer Board's Terms of Service and Conduct (TSC).


About Cramster | Terms of Use | Privacy Policy | Contact Us | Press Room | Site Map | Support | Anti-Cheating Policy

Cramster.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.
Copyright © 2008 Cramster, Inc.