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: Simple Physics Question help

  1. Feb 28, 2010 #1
    1. The problem statement, all variables and given/known data

    Calculate the average velocity for a remote controlled vehicle that starts with a speed of 1.0 m/s [forward] and then accelerates at 0.08 m/s2 [backward] for 4.0 s


    2. Relevant equations

    Vavg=deltaD/deltaT

    3. The attempt at a solution

    I'm unsure of how to go about this even though it seems its an easy question. Is there enough information to even solve it? Wouldn't i need the time at which it travels forward? Thanks for any help
     
  2. jcsd
  3. Feb 28, 2010 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi adhoward24! :smile:

    (have a delta: ∆ and try using the X2 tag just above the Reply box :wink:)
    I don't understand this …

    you know its speed at t = 0, and you know ∆t = 4.

    Hint: find an equation for ∆D, and divide it by ∆t. :wink:
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook