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The acceleration due to gravity is 10 ms-2. If the units of length and time are changed to kilometer and hour respectively, the numerical value of the acceleration due to gravity is

a
11296
b
72000
c
36000
d
129600

detailed solution

Correct option is D

n2=n1L1L21T1T2−2=10meterkm1sechr−2n2=10m103m1sec3600sec−2=129600

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