My motorcycle travels $220$ $km$ in $2.25$ hours. How would I correctly express its velocity in the appropriate SI units, $ms^-1$ ?

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Answer 1 · 2016-08-28T01:08:48

We need to convert km to m and hours to s.

$v=d/t=(220,000)/8100=27.2$ $ms^-1$ .

There are 1000 m in 1 km, so multiply by 1000: $220xx1000=220,000$ $m$ .

There are 60 minutes in 1 hr and 60 seconds in 1 min, so multiply by $60xx60=3600$ : $2.25xx3600=8100$ $s$ .

Answer 2 · 2018-03-28T14:41:46

$24.44 \ "m/s"=24.44 \ "ms"^-1$ .

Well, your velocity in $"km/h"$ is:

$220 \ "km/2.25 h"$

$=88 \ "km/h"$

We know that $1 \ "m/s"=3.6 \ "km/h"$ , and so your speed in $"m/s"$ is:

$88/3.6=24.bar(4)$

$~~24.44 \ "m/s"$

My motorcycle travels 220220 kmkm in 2.252.25 hours. How would I correctly express its velocity in the appropriate SI units, ms^-1ms^-1?