1. Not finding help here? Sign up for a free 30min 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!

Force given mass and acceleration problem

  1. Oct 24, 2012 #1
    1. The problem statement, all variables and given/known data
    Here is the problems exactly as written in the homework:

    A Ferrari accelerates from 0 to 100km/hr in 4.80 secs. What force (in Newtons) does a passenger with a mass of 68kg experience during the acceleration?


    2. Relevant equations
    a = v/t
    F=ma


    3. The attempt at a solution
    Ok...seems pretty straightforward, but the answer I come up with comes back as wrong. Can anyone point out my error?

    a=100/4.8=20.83km/hr

    F=68*20.8 = 1416.4kg*km/hr = 1416.4N
     
  2. jcsd
  3. Oct 24, 2012 #2
    Nevermind. I see what I over looked. Forgot to convert km/hr to m/s.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook