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Alexandra [31]
3 years ago
8

A car is driven for 2.0 h at 40.0 km/h, then for another 2.0 at 60 km/h in the same direction

Social Studies
1 answer:
timurjin [86]3 years ago
4 0
Although I think... 
<span>the average velocity means, total distance over total time </span>

<span>so consider the formula speed=distance/time. </span>

<span>And break it down, the first part: </span>
<span>speed=40 km/h, time 2 h </span>
<span>distance= speed *times* time </span>
<span>= 40 * 2 </span>
<span>= 80 km </span>

<span>Then the second part: </span>
<span>speed=60 km/h, time 2 h </span>
<span>distance= speed *times* time </span>
<span>= 60 * 2 </span>
<span>= 120 km </span>

<span>Total distance / Total time = Average Velocity (keep in mind the basic formula speed=distance/time) </span>
<span>therefore, (120+80) km / 4 hrs </span>
<span>= 50 km/h </span>

<span>Hope I helped :)</span>
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