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You have already traveled 30 miles east and then 30 miles north. To get back to the start, you travel 30 miles west in 1 hour and then 30 miles south in a half hour. What are your average speed and average velocity for the whole rally?

User JonZarate
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2 Answers

3 votes

Answer:

This question has several parts, this part is the second part, the first one said traveling 30 miles west in 1 h and then 3o miles south in 30 mins. the average speed is the distance, so it shoud be (30+30+30+30)/3=40 miles/h. And the average volocity is the distance, which means the straight distance that from the origin to the end, so it should be 0.

Explanation:

User Taapo
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4 votes

Answer:

The average speed for the whole rally is 45 miles per hour.

Explanation:

Given:

You have traveled 30 miles east and then 30 miles north. To get back to the start, I travel 30 miles west in 1 hour and then 30 miles south in a half hour.

Now, to find the average speed for the whole rally.

So, for getting the speed of 30 miles west in 1 hour.

By putting formula:


Speed = (distance)/(time)


Speed = (30)/(1)


Speed = 30\ miles\ per\ hour

Now, to get the speed of 30 miles south in half hour same way as above:


Speed=(30)/(0.5)


Speed = 60\ miles\ per\ hour

Then, to get the average speed.

We calculate the average of both the speed:


Average=(30+60)/(2)


Average=(90)/(2)


Average=45 miles\ per\ hour.

Therefore, the average speed for the whole rally is 45 miles per hour.

User Alexander Popov
by
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