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: Magnitude of Accleration

  1. Sep 16, 2008 #1
    A location of a particle is given in m by x, y and z coordinates as function of time in s as:
    x= -11+9t+11t^2
    y= -23-21t
    z= -93+25t+11t^2

    What is the magnitude of the objects acceleration at t= 3.00s?

    Would I add the second derivatives for magnitude?
  2. jcsd
  3. Sep 17, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi schrock! :smile:
    You mean |a| = x'' + y'' + z'' ?

    Nooo …

    Acceleration is a vector (just like velocity :wink:).

    So its magnitude is calculated from its components the same way as for any vector. :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook