The metre is defined as the distance travelled by ligh in `(1)/(299,792,458)` second. Why didn't people choose some easier number such as `(1)/(300.000.000)` second?

In the given v -1 graph, the distance travelled by the body in 5 second will be

Ratio of the distance travelled in 1 second, 2 seconds, 3 seconds

A freely falling body traveled xm in n^(th) second distance travelled in n-1^(th) second is

A freely falling body traveled xm in n^(th) second distance travelled in n-1^(th) second is

A freely falling body traveled xm in n^(th) second distance travelled in n-1^(th) second is

Light travels with a speed of 3xx10^(8) m s^(-1) . The distance travelled by light in 1 femto second is

Light travels 186000 in 1 second. Again 1 mile = 1.6093 km, let's find the distance travelled by light in 1 second in Kilometers approximately (upto 3 decimal place of approximation.).