You cannot.
cm per second is a measure of speed whereas minutes are a measure of time. The two measure different things and, according to the basic rules of dimensional analysis, conversion between them is not valid.
60 sec. per min.180 mins = 10800 secs.
(25,600 seconds) / (60 seconds per minute) = 426 and 2/3 minutes
1 hour = 60 minutes therefore 60 mins + 42 mins = 102 mins 102 mins x 60 seconds = 6120 seconds 6120 seconds
1 km per hour = 100,000 cm per 3,600 seconds = 27.77... cm per second
3 mins and 42 seconds
20 mins + 840 seconds = which is 34 mins
The speed is exactly 100 cm per 6 seconds. Converted into other units, it's also equivalent to -- 1 meter per 6 seconds -- 1662/3 millimeters per second -- 10 meters per minute -- 600 meters per hour -- 14.4 kilometers per day
270 seconds.
1,140 seconds.
5000 cm is 1/20 of a km and so 1/20*60*60 = 180 km per hour
120 seconds.
150 seconds