Question

A cheetah can run 31680 feet in 6 minutes. How many feet can a cheetah go in 5 minutes?

Answer 1

How many feet can he go in 1 minute?

Answer 2

5280?

Answer 3

Cheetahs have been known to reach 70 miles per hour for short bursts. That's almost 103 feet per second.

Answer 4

answer 26,400?

Answer 5

create a proportion
6 5
---- = --------
31680

cross multiply 31680 * 5
then divide that answer by 6
you then will get your answer

Answer 6

32000ft in 6 minutes? woahhh! Man that's fast! :O

Answer 7

I watched the video of that super fast cheetah too - and also thought that it would be somewhere around 60 to 70 mph... Someone said that was only 36.5 mph, but I had to do the math to see if it's right... I was surprised really...

Here's how I did my math and I am not really into math so anyone please correct me if I'm wrong...

There are 1,609.344 meters in a mile... so, if you divide that by 100 meters, you get 16.09 units of measure that he would have run if he had run a mile...

If it took him 6.13 seconds to do 100 meters, then it would have taken him 16.09 units of measure times 6.13 to run a mile... That comes out to 98.63 seconds to run one mile...

Since there are 3600 seconds in an hour, then if we divide 3600 by 98.63, we should get the number of miles per hour the cheetah can run. That comes out to 36.5 mph...

Someone please check my logic an math! I thought cheetahs could do 60 to 70...
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The 36.5mph is the average speed.
My assumption is that it takes a couple seconds to reach maximum speed for a cheetah, and a cheetah can only obtain it's peak speed for a few seconds before slowing down.
Timeline:
0s - 0mph
1s - 10mph
2s - 30mph
3s - 60mph
4s - 75mph
5s - 75mph
6s - 75mph
A cheetah can hold it's top speed for almost a minute.
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Yes - good point - this is an average. I didn't realize that this was a 100 meter dash... So, perhaps cheetah's top speed is 60 to 70...

100 meters/6.13 seconds (1 mile/1609 meters)(3600 seconds/1 hour)

= 36.5 miles per hour

double checks. logic and math OK.

Answer 8

Yes. you got it right. Very good.

Answer 9

26,400?

Answer 10

it's 36.5 miles

Answer 11

yes. you divided by 6 to find the feet in one minute and then you multiplied by 5 to find the feet in 5 minutes. Exactly right.

Answer 12

could you please help Set up a proportion for the following situation.

Kelly makes $80 for working a 3-hour shift at a restaurant. If she made $210, how many hours did she work?

Answer 13

Or you could have written this proportion as some suggested: