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: Constant acceleration of baseball problem

  1. Jan 27, 2017 #1
    1. The problem statement, all variables and given/known data
    "The fastest measured pitched baseball left the pitcher's hand at the speed of 45 m/s. If the pitcher was in contact with the ball over a distance of 1.50m and produced constant acceleration, (a) what acceleration did he give the ball, and (b) how much time did it take him to pitch it?"

    - I am doing this problem as part of my studying and I don't think that the textbook gives an answer to it. I am wondering if I did it correctly.... Thanks!

    - Assume one-dimensional motion.

    2. Relevant equations
    x is displacement (because my professor likes to use x for that).
    x = ((vi + vf) / 2)t
    a = (vf - vi) / t

    3. The attempt at a solution
    vf = 45 m/s
    v0 = 0 m/s
    x = 1.5m
    x = (45 + 0)/2 *t
    x = 22.5t
    1.5 / 22.5 = t
    t ≈ .067

    a = 45m/s / .067s
    a ≈ 671.642 m/s2
  2. jcsd
  3. Jan 27, 2017 #2
  4. Jan 27, 2017 #3
  5. Jan 27, 2017 #4
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted