Question

Convert using dimensional method 5÷18 ms-1 in kmph ​

Answer 1

Answer:

Many will tell you a formula i.e, Multiple it by 5/18 and vice-versa if you want to convert s/m to km/h.

But will you ever understand the logic behind it?? Math becomes easier if we do understand the logic of everything.

So, let me tell you the logic behind this 5/18.

Its comes from 1000/3600. Now, from where these 1000 and 3600 came from?? Have a look.

Let’s take an example.

Say, we want to convert 72km/h in xx m/s.

So firstly, we convert 72 km’s in meters, which is 72*1000 =72000. Now, convert 1 hour into seconds which is 60*60= 3600.

Now, we need meter per second.

Meter/seconds, 72000/3600 = 20m/s, here’s the Answer.

I just want you guys to know the logic, at last we all need to multiple it by 5/18.