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March 28, 2015

Homework Help: 8th Grade Science

Posted by Anya on Tuesday, January 10, 2012 at 8:51pm.

A runner whose initial speed is 29 km/hr increases her speed to 31 km/hr in order to win a race. If the runner takes 0.5 seconds to complete this increase in speed, what is her acceleration?

I think it's either 1440 km/hr/hr
or 0.4 km/hr/sec. Are you supposed to convert the seconds? Thank you in advance.

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