Respuesta :
Answer:
The average speed for the whole rally is 45 miles per hour.
Step-by-step 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:
[tex]Speed = \frac{distance}{time}[/tex]
[tex]Speed = \frac{30}{1}[/tex]
[tex]Speed = 30\ miles\ per\ hour[/tex]
Now, to get the speed of 30 miles south in half hour same way as above:
[tex]Speed=\frac{30}{0.5}[/tex]
[tex]Speed = 60\ miles\ per\ hour[/tex]
Then, to get the average speed.
We calculate the average of both the speed:
[tex]Average=\frac{30+60}{2}[/tex]
[tex]Average=\frac{90}{2}[/tex]
[tex]Average=45 miles\ per\ hour.[/tex]
Therefore, the average speed for the whole rally is 45 miles per hour.
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.
Step-by-step explanation:
