My Math Forum Magnitude of Acceleration

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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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