1. Not finding help here? Sign up for a free 30min 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!

Average force between baseball and bat

  1. Nov 14, 2014 #1
    1. The problem statement, all variables and given/known data

    A 0.145- kg baseball with an initial speed of 20 m/s rebounds with a speed of 36 m/s after being struck with a bat. If the duration of contact between ball and bat was 2.4 ms, what was the magnitude of the average force between ball and bat?

    2. Relevant equations
    Δ velocity=Vf-Vi
    F= mass* Δ velocity/(Δ time)

    3. The attempt at a solution

    Δ velocity = -36-20 = -56 m/s

    mass* Δ velocity/(Δ time) = 56 m/s * 0.145 kg / .0024s
    3383.333 N
     
  2. jcsd
  3. Nov 14, 2014 #2

    BvU

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Hello Rachel, and welcome to PF :)

    Seven digits precision is a bit much. Your calculation is just fine. Was that what you wanted to know ?
    (In fact PF isn't really meant for stamp-approving homework -- I hope I don't get in trouble over this one...)
     
  4. Nov 14, 2014 #3
    The problem is that it's an online hw and the website is saying it's incorrect. Thank you though!
     
  5. Nov 14, 2014 #4
    Actually, I decided to try it without any decimal points and it turned out to be right. Weird. Thanks again :)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Average force between baseball and bat
  1. Batted Baseball (Replies: 12)

Loading...