Converting M-feet, & speed?

Questions and answers on how to convert things from one unit or system to another


Converting M-feet, & speed?

Postby lovinlife1997 » Fri Jan 21, 2005 10:08 pm

Can someone please explain the steps in order to answer this question?

If Johnny ran 100 meters in 9.92 seconds, how many feet did he run per second?

I have tried to figure this out but can't.

My second question is this:

If a rectangle in 9in long on one side & 6in on the other; how many meters squared is it?

I do not understand why i woul dhave to convert this into centimeters first the way our teaher did--can someone please explain that and then explain the steps?

I would really appreciate all help on this, i am just learning and already confused!
Thanks for all your help!
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Joined: Fri Jan 21, 2005 10:02 pm
Location: Chicago

Postby claire » Fri Apr 08, 2005 4:15 pm

all you have to do is to figure out how may meters/second he runs. Then you convert your answer in feet.

remember v= d/t where v= speed; d= distance and t= time

So 100/9.92=10.08 m/s now all you have to do is convert it to feet.

Postby Guest » Fri Apr 08, 2005 6:53 pm

To answer your second question, it is not necessary to convert to centimeters first, although that might be the most useful unit to describe it's size metrically.

1" = 25.4 mm = 2.54 cm = 0.0254 m, these are all equivalent

So the area of a 6" x 9" pan is

6 in x 9 in x (0.0254 m/in)^2 = 0.03484 m^2 ( or 348.4 cm^2).

If you had to describe the pan, 15 cm x 23 cm (approx) might be more useful than 0.15 m x 0.23 m.

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