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July 25, 2014

July 25, 2014

Posted by **Morgan** on Tuesday, March 23, 2010 at 4:01pm.

An automobile engine slows down from 4500 rpm to 1500 rpm in 2.5 seconds.

a) calculate angular accceleration

b)calculate total number of revolutions done in this time.

What I did:

a) I got the answer, and it was right, and it was also negative, but: what confused me was b

b) It is decelerating, this really confused me. I wasn't even sure how to approach this.

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