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November 15th, 2013, 04:25 PM  #1 
Newbie Joined: Oct 2013 Posts: 10 Thanks: 0  Magnitude of Acceleration
Just a basic question, I'm wondering if there is a formula so I can use it for harder questions. A car accelerates along a straight road from rest to 75 km/h in 5 secs. What is the magnitude of its average acceleration? All I did was 75/5 =15, converted 15km into metres, so 15000, then divided by 60 (minutes)=250, then divided by 60(seconds) to get 4.16. But is there a different/simpler way to do this so I can apply it to more difficult questions? 
November 16th, 2013, 01:07 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,754 Thanks: 695  Re: Magnitude of Acceleration
The bulk of your calculation involved unit conversion. The only way to simplify is to set up a table of conversion factors.


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