Discussion in 'Physics' started by braddy, Sep 11, 2005.

  1. braddy

    Thread Starter Well-Known Member

    Dec 29, 2004
    Hi ,
    I have troulbe with the second question of this problem.

    A softball picher pitches a ball at 65 mph.
    The distance from the pitcher's mound to home plate is 43ft, but the pitcher realeases the ball about 41 ft from the home plate.
    a- How long does it takes for the ball to reach home plate? (I found it t=.43s)
    b-A Good pitcher can make the ball curve left about 6 inches over the pitch distance. If this is due to a constant acceleration, what is its magnitude and which direction does it act?

    need some suggestions.

    Thank you

  2. GnatWest

    New Member

    Apr 24, 2004
    Im used to metric so Im not sure if my conversion is correct.

    I will be working with feet and seconds

    first 65mph = 95.33 fps (google)

    a) The equation we will be using is d=vt. In this problem we have d and v. Solving for t we get t= d/v or t= 45/95.33.

    t= 0.45s

    B) for this problem we use d= 1/2at^2, we have d= 1/2 feed and t= 0.45s
    solving for a gives us a= 2d/t^2

    a= 4.93 f/s^2 to the left