How do you convert meters per second to mm per hour?

Answer 1

There are 1,000 millimetres in a metre.

There are 3,600 seconds in an hour.

So to convert you need to multiply by 1,000 and again by 3,600.

100 metres per second = 100,000 millimetres per second.

100,000 millimetres per second = 3,600,000 millimetres per hour.