Question

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

TNSCERT Class 9 General Science Ch 6 Motion

Answer 1

convert everything into a single system of units use 1km=1000m ,1hr=3600 sec, 1sec = 100milli sec,1min=60 sec. then rearrange.