During an experiment, a signal from a spaceship reached the ground station in five minutes. What was ne distance of the spaceship from the ground station? The signal travels at the speed of light, that is, * 10 ms. [3 Marks]

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As we buow ( u=frac{d}{t} ) ( therefore quad d=v times t=3 times 10^{8} frac{M}{s} times(5 times 60) S ) ( =3 times 10^{8} times 300 mathrm{m} ) ( =9 times 10^{9} mathrm{m} ) on. ( 9 times 10^{6} mathrm{km} )

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