Question

Convert 20m/s to km/h​

Answer 1

Answer:

20×18/5=72km/h

18/5 is short trick to convert

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Answer 2

Answer:

1 hr = 3600 seconds

1 sec = 20 m

Therefore,

1 hr = 3600 × 20

= 72000

Now,

1 km = 1000 m

Therefore,

72000 m = 72 km

The answer is 72 km/hr