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: Inclined Plane and soccer ball

  1. Sep 10, 2006 #1
    i think this is an easy question but i forgot how and the book doesn't want to tell me. can anyone tell me how to figure this out? thanks.

    A soccer ball is released from the top of a smooth incline. After 4.58 s the ball travels 10.8 m. One second later it has reached the bottom of the incline.

    (question 1)Assume the ball's acceleration is constant and determine its value ( m/s2).

    (question 2)How long is the incline?
  2. jcsd
  3. Sep 10, 2006 #2

    Chi Meson

    User Avatar
    Science Advisor
    Homework Helper

    what's the initial velocity?

    how much time has elapsed?

    what is the displacement of the ball?

    That's three things you know. What formula relates these three things along with acceleration?
  4. Sep 10, 2006 #3
    thats the only information included in the question.
  5. Sep 10, 2006 #4
    luckii, if that didn't help you, try with
    s = \frac{1}{2} a t^2

    then you should be fine with both questions...
    good luck :)
  6. Sep 10, 2006 #5

    Chi Meson

    User Avatar
    Science Advisor
    Homework Helper

    Yes, and I'm trying to get you to notice that the question gives you initial velocity (zero), time (4.58 s) and displacement (10.8 m).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook