๐ผ ๐๐๐ง ๐ฉ๐ง๐๐ซ๐๐ก๐จ ๐๐ก๐ค๐ฃ๐ ๐ ๐จ๐ฉ๐ง๐๐๐๐๐ฉ ๐ก๐๐ฃ๐ ๐๐ฉ ๐ ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐ ๐ค๐ 60.0 ๐ข๐/๐ ๐๐ค๐ง ๐ ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ๐ ๐ฉ๐๐๐ฃ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ ๐ฉ๐๐ ๐จ๐๐ข๐ ๐๐๐ง๐๐๐ฉ๐๐ค๐ฃ ๐๐ฉ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐. ๐๐๐ ๐๐ซ๐๐ง๐๐๐ ๐ซ๐๐ก๐ค๐๐๐ฉ๐ฎ ๐๐ค๐ง ๐ฉ๐๐ ๐๐ฃ๐ฉ๐๐ง๐ ๐ฉ๐ง๐๐ฅ ๐๐จ 30.0 ๐ข๐/๐. U๐จ๐ ๐ฉ๐๐๐จ ๐๐ฃ๐๐ค๐ง๐ข๐๐ฉ๐๐ค๐ฃ ๐ฉ๐ค ๐๐ฃ๐จ๐ฌ๐๐ง 21-23 21. What is the constant speed with which the car moved during the second distance ๐ฅ?
Question
๐ผ ๐๐๐ง ๐ฉ๐ง๐๐ซ๐๐ก๐จ ๐๐ก๐ค๐ฃ๐ ๐ ๐จ๐ฉ๐ง๐๐๐๐๐ฉ ๐ก๐๐ฃ๐ ๐๐ฉ ๐ ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐ ๐ค๐ 60.0 ๐ข๐/๐ ๐๐ค๐ง ๐ ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ๐ ๐ฉ๐๐๐ฃ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ ๐ฉ๐๐ ๐จ๐๐ข๐ ๐๐๐ง๐๐๐ฉ๐๐ค๐ฃ ๐๐ฉ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐. ๐๐๐ ๐๐ซ๐๐ง๐๐๐ ๐ซ๐๐ก๐ค๐๐๐ฉ๐ฎ ๐๐ค๐ง ๐ฉ๐๐ ๐๐ฃ๐ฉ๐๐ง๐ ๐ฉ๐ง๐๐ฅ ๐๐จ 30.0 ๐ข๐/๐. U๐จ๐ ๐ฉ๐๐๐จ ๐๐ฃ๐๐ค๐ง๐ข๐๐ฉ๐๐ค๐ฃ ๐ฉ๐ค ๐๐ฃ๐จ๐ฌ๐๐ง 21-23
- What is the constant speed with which the car moved during the second distance ๐ฅ?
Solution
The average speed of the entire trip is given by the total distance divided by the total time. The total distance is 2d (d for the first part of the trip and d for the second part). The average speed is given as 30 mi/h.
The speed during the first part of the trip is given as 60 mi/h. Therefore, the time for the first part of the trip is d/60 hours.
Since the average speed of the entire trip is total distance/total time, we can set up the following equation:
30 = 2d / (d/60 + t2)
where t2 is the time for the second part of the trip.
Solving for t2 gives us:
t2 = 2d/30 - d/60
We know that the speed for the second part of the trip is d/t2. Substituting the expression we found for t2 gives us:
Speed2 = d / (2d/30 - d/60)
Solving this equation will give us the speed for the second part of the trip.
Similar Questions
๐ผ ๐๐๐ง ๐ฉ๐ง๐๐ซ๐๐ก๐จ ๐๐ก๐ค๐ฃ๐ ๐ ๐จ๐ฉ๐ง๐๐๐๐๐ฉ ๐ก๐๐ฃ๐ ๐๐ฉ ๐ ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐ ๐ค๐ 60.0 ๐ข๐/๐ ๐๐ค๐ง ๐ ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ๐ ๐ฉ๐๐๐ฃ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐๐จ๐ฉ๐๐ฃ๐๐ ๐ ๐๐ฃ ๐ฉ๐๐ ๐จ๐๐ข๐ ๐๐๐ง๐๐๐ฉ๐๐ค๐ฃ ๐๐ฉ ๐๐ฃ๐ค๐ฉ๐๐๐ง ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐จ๐ฅ๐๐๐. ๐๐๐ ๐๐ซ๐๐ง๐๐๐ ๐ซ๐๐ก๐ค๐๐๐ฉ๐ฎ ๐๐ค๐ง ๐ฉ๐๐ ๐๐ฃ๐ฉ๐๐ง๐ ๐ฉ๐ง๐๐ฅ ๐๐จ 30.0 ๐ข๐/๐. U๐จ๐ ๐ฉ๐๐๐จ ๐๐ฃ๐๐ค๐ง๐ข๐๐ฉ๐๐ค๐ฃ ๐ฉ๐ค ๐๐ฃ๐จ๐ฌ๐๐ง 21-23 . What is the average speed for the new trip above?
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