1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Need help on a Newton's Laws problem

  1. Dec 2, 2007 #1
    [SOLVED] Need help on a Newton's Laws problem :(

    1. The problem statement, all variables and given/known data

    A 56 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 2.1 N. What is the skater's initial acceleration once the wind begins to blow?

    2. Relevant equations
    a=change in velocity/change in time

    3. The attempt at a solution

    I'm not sure how to find the initial acceleration. I know how to find the average acceleration though.
  2. jcsd
  3. Dec 2, 2007 #2
    Nevermind, figured it out on my own:
    Just have to do: 2.1/56

    >_< why did i think this was hard...
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook