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psi20

Conversion from m/s^2 to km/h^2

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The problem is to convert 3m/s^2 to km/h^2. How do you do that again?

 

Multiply by 1, and cancel the units

 

1 km/1000 m =1

 

3600 s/1 hr = 1 (remember to square the whole thing)

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3m/s^2=10.8km/h^2

 

a. it doesn't answer the question (how do you do it)

 

and

 

b. it's wrong. (3 m/s = 10.8 km/hr)

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123rock's answer helped me a lot. I forgot to ask what's the answer as well as how do you do it.

 

Why would it become km/hr? There may have been confusion using my notation I think. I meant it to be acceleration as in 3 meters per square second.

 

But now I'm confused.

 

 

3m/s^2 * 1km/1000m * (3600s/1h)^2 and I get 38880 km/h^2

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sqrt.3m/s=sqrt.3/1000km/s, then multiply by 3600, get yeah my bad approx 38.888/h^2, forgot it was squared.

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I'm still lost. I don't mean (3m/s)^2, I don't mean 3m/s, I don't mean ((3m)^2)/s, but I do mean 3m/(s^2).

 

Using your method with square roots, I still get 38880km per sq. hr . a/b does not equal sqrt a / sqrt b , but you can take a square root and then square and it'll be equal

 

3m/(s^2) ==>

 

sqrt (3m)/s = sqrt (.003km)/s * 3600s/h = sqrt (.003km) *3600/h

 

<==(.003*3600^2 km) / (h^2) = 38880 km/ (h^2)

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