Question

Arrange the following speeds in the ascending order.
(7 m/s, 15 km/h, 2 km /minute, 0.1 m/millisecond)

Answer 1

7 m/s
15 km/h=15x5/18=4.16m/s
2 km/min=2x1000  = 33.33m/s
                 60
0.1 m/millisec=0.1        =0.1x10^3=100m/s
                       10^-3
ascending order is
15km/hr <7 m/s<2km/min<0.1m/millisecond