Question

speed of light in SI system is 3 into 10 to the power 8 metre per second in a new system unit of length is a kilometre and unit of time is second then speed of light in new system of unit is​

Answer 1

Answer:

3×10⁵ km/s

Explanation:

Simply covert meters into kilometers since the time is in the same units.

therefore the answer you are looking for is,

3×10⁸/1000 = 3×10⁵ kms⁻¹