Convert ms to kmh

Answer 1

1kmh = 0.2(7) m/s


Calculation is simple
1 km1000 m1 km/h=-------=------------1 h3600 s

So there are two possible ways to convert km/h to m/s


First method:

Multiply km/h by 1000 and divide it by 3600

So e.g. speed of sound which is 1225 (I'm rounding it slightly)

1225 km/h = 1225 * 1000 / 3600 = 340.2(7)


Second method:

Since multiplication and division is alternate:

Divide km/h by 3600 and next multiply by 1000

1225 km/h = 1225 / 3600 * 1000 = 340.2(7)

Second method is very easy to remember. You can simplify it by dividing 'big' numbers by 1000.

3600 * 1000
---------------- = 3.6 * 1 = 3.6
1000

So you get easy to remember divisor 3.6

1225 km/h = 1225 / 3.6 = 340.2(7)


Note:
Do not multiply hm/h by 0.28 like some people advice because you will get an error:

1225 / 0.28 = 343

3 is almost 1% of 340.

Answer 2

To convert from m/s (meters per second) to km/h (kilometers per hour), you can multiply the speed in m/s by 3.6. This conversion factor accounts for the difference in the units of measurement (meters to kilometers and seconds to hours).

Answer 3

1 mile = 5280 ft, so 1 mph is 5280/3600 ft/sec = 1.47 ft/sec = 0.448 meters/sec mph x 0.45 = m/s

ms is milliseconds, really has nothing to do with speed in this context.

Answer 4

1 km/hr = 1000 m / 3600 seconds = 1/3.6 m/s = 0.2777... m/s

Answer 5

1m/s = 3.6km/h

Answer 6

Multiply by 3.6.

Answer 7

Convert 10 ms‐² in kmh‐²