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: A particle is moving with a velocity of 60.0 m/s

  1. May 30, 2010 #1
    A particle is moving with a velocity of 60.0 m/s in positive x direction at t= 0 and t = 15.0 s the velcity decreases uniformly to zero . What was the acceleration during this 15.0-s interval ? what is the significance of the sign of your answer ?

    my answer is

    Vo = 0

    a = 60 - 0 / 15 = 4
  2. jcsd
  3. May 30, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi r-soy! :smile:

    You must get into the habit of writing the formula clearly on one line, then filling in the numbers on the next line …

    if you'd done that, you wouldn't have got the wrong answer! :redface:

    So try again, and start with the full formula. :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook