Homework Help: Mechanics that is physics

Posted by victoria on Friday, January 18, 2013 at 11:59am.

A car moved 15meter per sec.for 2min,after which it moved at 18meter per sec.for 45 sec,calculate the average velocity of the car.

Mechanics that is physics - Steve, Friday, January 18, 2013 at 12:35pm
total distance: 15*120 + 18*45 = 2610m
total time: 120+45 = 165 sec

avg speed: 2610m/165s = 15.82m/s

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