What is the Average Velocity Problem and How Can It Be Solved?

AI Thread Summary
The Average Velocity Problem involves calculating the necessary speed for the second half of a trip to achieve a desired average speed, given that the first half was traveled at a slower speed. To solve it, one can use the average velocity formula, where the final average speed is set to the target speed of 90 km/h. The discussion emphasizes that despite limited information, the problem can be logically approached using the average velocity concept. Participants suggest focusing on the relationship between distance and speed rather than time. Understanding this relationship is key to solving the problem effectively.
cocoavi
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I had a physics problem which I had some problem understanding. The problem is:

You plan a trip on which you want to average 90km/h. You cover the first half of the distance at an average speed of only 48km/h. What must your average speed be in the second half of the trip to meet your goal? Note that the velocities are based on half the distance, not half the time. Is this reasonable?

Thanks for your help!
 
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Just plug in the values you know to the average velocity formula and set vf to x :smile:
 
yes I know that if the question had given me any values at all.. but the problem is, that was what the book has given me.. that's all the information I have.
 
It is possible to solve it with the information given :wink: just think about it logically and take a look at that Vavg formula.
 
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