Question

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?

Answer 1

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:

Answer 2

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.