Homework Help: Physics

Posted by Jackie on Sunday, May 23, 2010 at 8:03pm.

Sally travels by car from one city to another. She drives for 28.0 min at 63.0 km/h, 50.0 min at 40.0 km/h, and 50.0 min at 43.0 km/h, and she spends 13.0 min eating lunch and buying gas.

Find the trip's average speed and total distance traveled...

Physics - bobpursley, Sunday, May 23, 2010 at 8:39pm
avg speed = total distance/time

total distance= rate1*time1 + rate2*time2 + ....

change minutes to hours.

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