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January 28, 2015

January 28, 2015

Posted by **Edward** on Monday, July 18, 2011 at 12:55am.

- physics -
**Henry**, Monday, July 18, 2011 at 9:14pm10m/s^2 is acceleration an not speed.

Did you mean 10m/s?

D = 10*90 + 15*120 + 5*60,

D = 900 + 1800 + 300 = 3000m = total distance.

T = 90 + 120 + 30 + 60 + 15 = 315s.

V = D / T = 3000m / 315s = 9.52m/s.

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