Fill in the blanks by suitable conversion of units: c) 3.0 m s–2= .... km h –1
3.88 x 10-4 km h-2
What is the need of measurement?
To get the complete knowledge of any physical quantity, measurement is needed. Measurement of any physical quantity involves comparison with a certain basic, arbitrarily chosen, internationally accepted reference standard called unit. Knowledge without measurement is incomplete and unsatisfactory.