Question

The value of acceleration due to gravity is 980 cm/s^2 . What will be its value if the unit of length is metre and that of time is hour ?

Answer 1

Given

$g = 980 \ cm/s^{2}$

                                                                                 

SOMETHING YOU NEED TO KNOW

$1 \ cm = 10^{-5} \ km$

$1 \ s = \dfrac{1}{60} \ min$

                                                   

$\implies g = 980 * \dfrac{10^{-5} }{(1/60)^2} \ km/min^{2}$

$\implies g = 980 * 3600 * 10^{-15}$

$\implies\boxed{\boxed{\bold{ g = 35.28 \ km/min^{2} }}}}$