How do you convert 90km/h in m/s?

Question

I would like to know the method to this question essentially, however I wouldn't mind the answer along with the method, so that I can check if I got the method right.

Answer 1

Convert kilometers into meters, then convert hours into seconds.

km into m: 90 * 1000 = 90000m/h

hr into sec: 90000 / 60 / 60 = 25m/s

It's 25m/s

Answer 2

First of all multiply 90 by 1000 (because there are 1000 metres in 1 kilometre) to convert the 90km/h to 90000m/h.  

Next, divide 90000 by 60 (because there are 60 minutes in 1 hour) to convert the 90000m/h to 1500m/min.

Finally, divide 1500 by 60 (because there are 60 seconds in 1 minute) to convert the 1500m/min to 25m/s which is the required answer.

Answer 3

km to m ==> x1000

hours to seconds ==> x60x60 ( 1 hour = 60 minutes, 1 minute = 60 seconds )

so 90 km/h ==> 90x1000/1x60x60 m/s = 90000/3600 m/s = 25 m/s

Answer 4

I had tried few online tutoring website and found transwebtutors.com quite interesting,

you may try this one

Answer 5

1 km = 1000 m

==> 90 km = 90*1000 m = 90000 m

1 hr = 3600 secs

So, 90 km/hr = 90000/3600 m/s = 25 m/s

Not too bad....right?

[[Missed the hrs/mins/secs thing...grrr]]

:)

Answer 6

(90km/h) x (1000m/km) x (h/60mins) x (mins/60sec) = 25m/s

Answer 7

The best way to go about answering this question is to decipher each part of the problem little by little.

First find out the conversions from km to m and h to s.

There are 1000m in 1km and 3600s in 1hr

(You can do this at google.com by typing 1hr = ?s or 1km = ?m in the search box)

Now that we know the conversions we have to apply them.

90km/hr = ?m/s

We know that 1km = 1000m so 90km = 90000m

90000m/hr = ?m/s

We also know that 1hr = 3600s

90000m/3600s

Now divide 90000/3600 = 25

So the answer would be 25m/s

Answer 8

i don't no the method but i used my phone

in:

metre/sec its 25

miles/h its 55.92341

feet/sec its 82.021

i used the converter on my phone and it wont show how to do it try google?

Answer 9

90 km/h = 90*1000/3600

             = 25m/s

Answer 10

I used to have problems doing this too. the best way is to break it down and look at it logically. First do the distance part:

90km to metres, well there are 1000 metres in a Km, you have 90 km, so 90 multiplied by 1000 =  90,000.

So now you have 90,000 metres an hour (m/h).

Now do the time aspect of the problem:

i) you know that there are 60 minutes in an hour, so divide 90,000 by 60 = 1500 metres a minute.

ii) now you also know there are 60 seconds in an hour, so divide 1500 by 60 =  25 m/s

You can apply this method to any conversion of this type.

Hope it helps!

Answer 11

i think you should multiply it by 1000/3600 .