Q2 of 39 Page 35

3.0 m s-2 =.... km h-2

Here we have to convert m/s2 into km/h2


1 km = 1000 m


1 m = 10-3 km


1 s = h


Substituting the above values


3 m s-2 = 3 × 10-3 km × { h}-2


= 3.88 × 104 km h-2


3.0 m s-2 = 3.88 × 104 km h-2


More from this chapter

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2

Fill in the blanks by suitable conversion of units.

A. 1 kg m2 s-2 = ....g cm2 s-2

 2

1 m =..... ly

 2

G = 6.67 × 10–11 N m2 (kg)–2 =.... (cm)3 s–2 g–1.

 3

A calorie is a unit of heat or energy and it equals about 4.2 J where 1J = 1 kg m2 s–2.Suppose we employ a system of units in which the unit of mass equals kg, the unit of length equals m, the unit of time is s. Show that a calorie has a magnitude 4.2 in terms of the new units.