Question

What is 75 miles per hour in kilometers per second?

Answer 1

`0.0335` `(km)/h`

Explanation:

We need to convert `75` `(mi)/h` into `(km)/h`

Cancel the hours in the denominator

`rarr75 (mi)/h*(1h)/(3600s)`

(as `1` hour is `3600s`)

`rarr75 (mi)/cancelh*cancel(1h)/(3600s)`

`rarr75 (mi)/(3600s)`

Cancel the miles in the numerator

`rarr75 (mi)/(3600s)*(1.609km)/(1m)`

(as `1` mile is `1.609km`)

`rarr75 cancel(mi)/(3600s)*(1.609km)/cancel(1mi)`

`rarr75 (1.609km)/(3600s)`

`color(green)(rArr0.0335(km)/s`

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