The problem as it is verbatim:

"Calculate the average speed a runnr has during a marathon. The time data is entered via keyboard, expressed in minutes. The result should be in Kilometers per hour."

I'm assuming the distance is measured in Meters. Ok.

How would I convert meters per second, to kilometers per hour? Paging, Macosxnerd.

## 5 Replies - 803 Views - Last Post: 25 August 2011 - 10:47 AM

### #1

# Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 09:12 AM

##
**Replies To:** Simple math problem, trying to help out my little brother.

### #2

## Re: Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 09:13 AM

The conversion is 1 m/sec == 3.6 km/hr.

By the way, not sure if you're aware, but the Google calculator is tremendous for conversions. I used it a ton in my two years of chemistry. Type in unita to unitb and it should show you the conversion.

Hope this helps some!

By the way, not sure if you're aware, but the Google calculator is tremendous for conversions. I used it a ton in my two years of chemistry. Type in unita to unitb and it should show you the conversion.

Hope this helps some!

### #3

## Re: Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 09:21 AM

(1 m / 1 s) x (3600 s / 1 hr) x (1 km / 1000 m) = profit (or as mac said, 3.6 km/hr)

This post has been edited by **NeoTifa**: 25 August 2011 - 09:21 AM

### #4

## Re: Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 09:31 AM

**How many Meters in a Kilometre?**

1 Km = 1000 m

**How many Minutes in a Hour?**

1 Hr = 60 mins

**How many Seconds in a Minute?**

1 Min = 60 Secs

**How many Seconds in a Hour?**

60 Secs * 60 Mins = 3600 Secs

**So how m/s is equalivent to 1Km / s?**

1 M/Sec == 1000m / 3600 Secs == 1m/3.6secs

### #5

## Re: Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 10:43 AM

You forgot the k....

### #6

## Re: Simple math problem, trying to help out my little brother.

Posted 25 August 2011 - 10:47 AM

Page 1 of 1