36 km/hr can be represented as:
30 m/s
40 m/s
20 m/s
10 m/s
The S.I. unit of speed is meter per second. So by converting 36 km/h to S.I. units we get:
36×1000 m3600 s
=1000100=10m/s
or we can get it by multiplying speed in km/h by 518
Speed =36×518 = 10 m/s
By increasing the speed of a car by 10km/hr, the time of journey for a distance of 72km is reduced by 36mins. Find the original speed.